121210002021020 has 96 divisors (see below), whose sum is σ = 292313426227200. Its totient is φ = 41754050553600.

The previous prime is 121210002020953. The next prime is 121210002021037. The reversal of 121210002021020 is 20120200012121.

It is a junction number, because it is equal to n+sod(n) for n = 121210002020986 and 121210002021004.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 69492146 + ... + 71215014.

It is an arithmetic number, because the mean of its divisors is an integer number (3044931523200).

Almost surely, 2^{121210002021020} is an apocalyptic number.

121210002021020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121210002021020 is an abundant number, since it is smaller than the sum of its proper divisors (171103424206180).

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

121210002021020 is a wasteful number, since it uses less digits than its factorization.

121210002021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739739 (or 1739737 counting only the distinct ones).

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

Adding to 121210002021020 its reverse (20120200012121), we get a palindrome (141330202033141).

The spelling of 121210002021020 in words is "one hundred twenty-one trillion, two hundred ten billion, two million, twenty-one thousand, twenty".