2021221000204 has 24 divisors (see below), whose sum is σ = 4128451407360. Its totient is φ = 847806984336.

The previous prime is 2021221000151. The next prime is 2021221000223. The reversal of 2021221000204 is 4020001221202.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 767939794 + ... + 767942425.

It is an arithmetic number, because the mean of its divisors is an integer number (172018808640).

Almost surely, 2^{2021221000204} is an apocalyptic number.

It is an amenable number.

2021221000204 is an abundant number, since it is smaller than the sum of its proper divisors (2107230407156).

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

2021221000204 is a wasteful number, since it uses less digits than its factorization.

2021221000204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1535882277 (or 1535882275 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 2021221000204 its reverse (4020001221202), we get a palindrome (6041222221406).

The spelling of 2021221000204 in words is "two trillion, twenty-one billion, two hundred twenty-one million, two hundred four", and thus it is an aban number.