122121111112210 has 96 divisors (see below), whose sum is σ = 254090129973120. Its totient is φ = 41397150670848.

The previous prime is 122121111112199. The next prime is 122121111112361. The reversal of 122121111112210 is 12211111121221.

It is a super-2 number, since 2×122121111112210² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 664465789 + ... + 664649551.

It is an arithmetic number, because the mean of its divisors is an integer number (2646772187220).

Almost surely, 2^{122121111112210} is an apocalyptic number.

122121111112210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122121111112210 is an abundant number, since it is smaller than the sum of its proper divisors (131969018860910).

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

122121111112210 is a wasteful number, since it uses less digits than its factorization.

122121111112210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184980 (or 184883 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 122121111112210 its reverse (12211111121221), we get a palindrome (134332222233431).

The spelling of 122121111112210 in words is "one hundred twenty-two trillion, one hundred twenty-one billion, one hundred eleven million, one hundred twelve thousand, two hundred ten".