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2231010211220 = 225715935787223
BaseRepresentation
bin100000011101110010100…
…100100011010110010100
321220021121221022111002222
4200131302210203112110
5243023102103224340
64424524551321512
7320120340621110
oct40356244432624
97807557274088
102231010211220
1179019111371a
12300474980298
131324ca31c54b
1479da5224740
153d078ac78b5
hex20772923594

2231010211220 has 24 divisors (see below), whose sum is σ = 5354424507264. Its totient is φ = 764917786656.

The previous prime is 2231010211181. The next prime is 2231010211247. The reversal of 2231010211220 is 221120101322.

It is a super-3 number, since 3×22310102112203 (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7967893472 + ... + 7967893751.

It is an arithmetic number, because the mean of its divisors is an integer number (223101021136).

Almost surely, 22231010211220 is an apocalyptic number.

2231010211220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2231010211220 is an abundant number, since it is smaller than the sum of its proper divisors (3123414296044).

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

2231010211220 is a wasteful number, since it uses less digits than its factorization.

2231010211220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15935787239 (or 15935787237 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 2231010211220 its reverse (221120101322), we get a palindrome (2452130312542).

The spelling of 2231010211220 in words is "two trillion, two hundred thirty-one billion, ten million, two hundred eleven thousand, two hundred twenty".

Divisors: 1 2 4 5 7 10 14 20 28 35 70 140 15935787223 31871574446 63743148892 79678936115 111550510561 159357872230 223101021122 318715744460 446202042244 557752552805 1115505105610 2231010211220