121122112210110 has 128 divisors (see below), whose sum is σ = 353139994944000. Its totient is φ = 29297539676160.

The previous prime is 121122112210087. The next prime is 121122112210123. The reversal of 121122112210110 is 11012211221121.

It is a happy number.

121122112210110 is a `hidden beast` number, since 1 + 211 + 22 + 112 + 210 + 110 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 44080564 + ... + 46747623.

It is an arithmetic number, because the mean of its divisors is an integer number (2758906210500).

Almost surely, 2^{121122112210110} is an apocalyptic number.

121122112210110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121122112210110 is an abundant number, since it is smaller than the sum of its proper divisors (232017882733890).

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

121122112210110 is a wasteful number, since it uses less digits than its factorization.

121122112210110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90828663 (or 90828657 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 121122112210110 its reverse (11012211221121), we get a palindrome (132134323431231).

The spelling of 121122112210110 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, one hundred twelve million, two hundred ten thousand, one hundred ten".