121221020012 has 24 divisors (see below), whose sum is σ = 226102957920. Its totient is φ = 56667398400.

The previous prime is 121221020009. The next prime is 121221020051. The reversal of 121221020012 is 210020122121.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5892587 + ... + 5913122.

It is an arithmetic number, because the mean of its divisors is an integer number (9420956580).

Almost surely, 2^121221020012 is an apocalyptic number.

It is an amenable number.

121221020012 is a deficient number, since it is larger than the sum of its proper divisors (104881937908).

121221020012 is a wasteful number, since it uses less digits than its factorization.

121221020012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11805881 (or 11805879 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121221020012 its reverse (210020122121), we get a palindrome (331241142133).

The spelling of 121221020012 in words is "one hundred twenty-one billion, two hundred twenty-one million, twenty thousand, twelve".