121111022022210 has 128 divisors (see below), whose sum is σ = 353455847147520. Its totient is φ = 29265841598400.

The previous prime is 121111022022197. The next prime is 121111022022229. The reversal of 121111022022210 is 12220220111121.

121111022022210 is a `hidden beast` number, since 1 + 211 + 1 + 1 + 0 + 220 + 22 + 210 = 666.

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

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, 64636012 + ... + 66483351.

It is an arithmetic number, because the mean of its divisors is an integer number (2761373805840).

Almost surely, 2^{121111022022210} is an apocalyptic number.

121111022022210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121111022022210 is an abundant number, since it is smaller than the sum of its proper divisors (232344825125310).

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

121111022022210 is a wasteful number, since it uses less digits than its factorization.

121111022022210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131119701 (or 131119695 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121111022022210 its reverse (12220220111121), we get a palindrome (133331242133331).

The spelling of 121111022022210 in words is "one hundred twenty-one trillion, one hundred eleven billion, twenty-two million, twenty-two thousand, two hundred ten".