2021000121018 has 96 divisors (see below), whose sum is σ = 4829293909440. Its totient is φ = 631630794240.

The previous prime is 2021000120987. The next prime is 2021000121031. The reversal of 2021000121018 is 8101210001202.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 232473 + ... + 2023868.

It is an arithmetic number, because the mean of its divisors is an integer number (50305144890).

Almost surely, 2^{2021000121018} is an apocalyptic number.

2021000121018 is an abundant number, since it is smaller than the sum of its proper divisors (2808293788422).

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

2021000121018 is a wasteful number, since it uses less digits than its factorization.

2021000121018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2256474 (or 2256462 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

The spelling of 2021000121018 in words is "two trillion, twenty-one billion, one hundred twenty-one thousand, eighteen".