121012111210220 has 24 divisors (see below), whose sum is σ = 254438781829008. Its totient is φ = 48345159096000.

The previous prime is 121012111210171. The next prime is 121012111210259. The reversal of 121012111210220 is 22012111210121.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3730320131 + ... + 3730352570.

It is an arithmetic number, because the mean of its divisors is an integer number (10601615909542).

Almost surely, 2^{121012111210220} is an apocalyptic number.

121012111210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121012111210220 is an abundant number, since it is smaller than the sum of its proper divisors (133426670618788).

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

121012111210220 is a wasteful number, since it uses less digits than its factorization.

121012111210220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7460673521 (or 7460673519 counting only the distinct ones).

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

Adding to 121012111210220 its reverse (22012111210121), we get a palindrome (143024222420341).

Subtracting from 121012111210220 its reverse (22012111210121), we obtain a palindrome (99000000000099).

The spelling of 121012111210220 in words is "one hundred twenty-one trillion, twelve billion, one hundred eleven million, two hundred ten thousand, two hundred twenty".