121001020120120 has 96 divisors (see below), whose sum is σ = 316734285290400. Its totient is φ = 41481788957952.

The previous prime is 121001020120091. The next prime is 121001020120133. The reversal of 121001020120120 is 21021020100121.

It is a self number, because there is not a number n which added to its sum of digits gives 121001020120120.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15873234 + ... + 22225246.

It is an arithmetic number, because the mean of its divisors is an integer number (3299315471775).

Almost surely, 2^{121001020120120} is an apocalyptic number.

121001020120120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121001020120120 is an abundant number, since it is smaller than the sum of its proper divisors (195733265170280).

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

121001020120120 is a wasteful number, since it uses less digits than its factorization.

121001020120120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6361757 (or 6361746 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121001020120120 its reverse (21021020100121), we get a palindrome (142022040220241).

The spelling of 121001020120120 in words is "one hundred twenty-one trillion, one billion, twenty million, one hundred twenty thousand, one hundred twenty".