121001021020000 has 120 divisors (see below), whose sum is σ = 324742540803912. Its totient is φ = 44000371200000.

The previous prime is 121001021019997. The next prime is 121001021020027. The reversal of 121001021020000 is 20120100121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 274782321 + ... + 275222320.

Almost surely, 2^{121001021020000} is an apocalyptic number.

121001021020000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121001021020000 is an abundant number, since it is smaller than the sum of its proper divisors (203741519783912).

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

121001021020000 is an equidigital number, since it uses as much as digits as its factorization.

121001021020000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 550004682 (or 550004659 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121001021020000 its reverse (20120100121), we get a palindrome (121021141120121).

The spelling of 121001021020000 in words is "one hundred twenty-one trillion, one billion, twenty-one million, twenty thousand".