20101122222210 has 32 divisors (see below), whose sum is σ = 53602992593280. Its totient is φ = 5360299259184.

The previous prime is 20101122222161. The next prime is 20101122222241. The reversal of 20101122222210 is 1222222110102.

It is a happy number.

20101122222210 is a `hidden beast` number, since 201 + 0 + 11 + 22 + 222 + 210 = 666.

It is a super-2 number, since 2×20101122222210² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 37224300142 + ... + 37224300681.

It is an arithmetic number, because the mean of its divisors is an integer number (1675093518540).

Almost surely, 2^{20101122222210} is an apocalyptic number.

20101122222210 is an abundant number, since it is smaller than the sum of its proper divisors (33501870371070).

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

20101122222210 is a wasteful number, since it uses less digits than its factorization.

20101122222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74448600839 (or 74448600833 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 20101122222210 its reverse (1222222110102), we get a palindrome (21323344332312).

The spelling of 20101122222210 in words is "twenty trillion, one hundred one billion, one hundred twenty-two million, two hundred twenty-two thousand, two hundred ten".