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2210001000020 = 2251110199459991
BaseRepresentation
bin100000001010001110010…
…100110001011001010100
321211021101202202222100122
4200022032110301121110
5242202040224000040
64411132131131112
7315444612360362
oct40121624613124
97737352688318
102210001000020
1178228aa4a360
122b8390a43a98
1313052c830c28
1478d70cb4632
153c74945b1b5
hex2028e531654

2210001000020 has 48 divisors (see below), whose sum is σ = 5113039268736. Its totient is φ = 795679920000.

The previous prime is 2210000999989. The next prime is 2210001000041. The reversal of 2210001000020 is 200001000122.

It is a junction number, because it is equal to n+sod(n) for n = 2210000999971 and 2210001000007.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49707776 + ... + 49752215.

It is an arithmetic number, because the mean of its divisors is an integer number (106521651432).

Almost surely, 22210001000020 is an apocalyptic number.

2210001000020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2210001000020 is an abundant number, since it is smaller than the sum of its proper divisors (2903038268716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2210001000020 is a wasteful number, since it uses less digits than its factorization.

2210001000020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99460112 (or 99460110 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

Adding to 2210001000020 its reverse (200001000122), we get a palindrome (2410002000142).

The spelling of 2210001000020 in words is "two trillion, two hundred ten billion, one million, twenty", and thus it is an aban number.

Divisors: 1 2 4 5 10 11 20 22 44 55 101 110 202 220 404 505 1010 1111 2020 2222 4444 5555 11110 22220 99459991 198919982 397839964 497299955 994599910 1094059901 1989199820 2188119802 4376239604 5470299505 10045459091 10940599010 20090918182 21881198020 40181836364 50227295455 100454590910 110500050001 200909181820 221000100002 442000200004 552500250005 1105000500010 2210001000020