121012102220 has 24 divisors (see below), whose sum is σ = 258432627600. Its totient is φ = 47584419392.

The previous prime is 121012102207. The next prime is 121012102229. The reversal of 121012102220 is 22201210121.

It is a junction number, because it is equal to n+sod(n) for n = 121012102195 and 121012102204.

It is not an unprimeable number, because it can be changed into a prime (121012102229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51275135 + ... + 51277494.

It is an arithmetic number, because the mean of its divisors is an integer number (10768026150).

Almost surely, 2^121012102220 is an apocalyptic number.

121012102220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121012102220 is an abundant number, since it is smaller than the sum of its proper divisors (137420525380).

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

121012102220 is a wasteful number, since it uses less digits than its factorization.

121012102220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102552697 (or 102552695 counting only the distinct ones).

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

Adding to 121012102220 its reverse (22201210121), we get a palindrome (143213312341).

The spelling of 121012102220 in words is "one hundred twenty-one billion, twelve million, one hundred two thousand, two hundred twenty".