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20011020222 = 234916792607
BaseRepresentation
bin10010101000101111…
…111110111110111110
31220122121021011011010
4102220233332332332
5311440310121342
613105401340050
71305614602554
oct225057767676
956577234133
1020011020222
118539776746
123a65797626
131b6ba6598b
14d7b953bd4
157c1be629c
hex4a8bfefbe

20011020222 has 16 divisors (see below), whose sum is σ = 40103557632. Its totient is φ = 6656753880.

The previous prime is 20011020221. The next prime is 20011020223. The reversal of 20011020222 is 22202011002.

It is an interprime number because it is at equal distance from previous prime (20011020221) and next prime (20011020223).

It is a junction number, because it is equal to n+sod(n) for n = 20011020198 and 20011020207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20011020221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3393358 + ... + 3399249.

It is an arithmetic number, because the mean of its divisors is an integer number (2506472352).

Almost surely, 220011020222 is an apocalyptic number.

20011020222 is an abundant number, since it is smaller than the sum of its proper divisors (20092537410).

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

20011020222 is a wasteful number, since it uses less digits than its factorization.

20011020222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6793103.

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 20011020222 its reverse (22202011002), we get a palindrome (42213031224).

The spelling of 20011020222 in words is "twenty billion, eleven million, twenty thousand, two hundred twenty-two".

Divisors: 1 2 3 6 491 982 1473 2946 6792607 13585214 20377821 40755642 3335170037 6670340074 10005510111 20011020222