121020220111112 has 32 divisors (see below), whose sum is σ = 259330806808320. Its totient is φ = 51865455876480.

The previous prime is 121020220111111. The next prime is 121020220111121. The reversal of 121020220111112 is 211111022020121.

It is not an unprimeable number, because it can be changed into a prime (121020220111111) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 1043537 + ... + 15592607.

It is an arithmetic number, because the mean of its divisors is an integer number (8104087712760).

Almost surely, 2^{121020220111112} is an apocalyptic number.

It is an amenable number.

121020220111112 is an abundant number, since it is smaller than the sum of its proper divisors (138310586697208).

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

121020220111112 is a wasteful number, since it uses less digits than its factorization.

121020220111112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14697621 (or 14697617 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121020220111112 its reverse (211111022020121), we get a palindrome (332131242131233).

The spelling of 121020220111112 in words is "one hundred twenty-one trillion, twenty billion, two hundred twenty million, one hundred eleven thousand, one hundred twelve".