202104120021 has 8 divisors (see below), whose sum is σ = 276044651904. Its totient is φ = 131449834080.

The previous prime is 202104119989. The next prime is 202104120037. The reversal of 202104120021 is 120021401202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 202104120021 - 2⁵ = 202104119989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202104120041) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 821561341 + ... + 821561586.

It is an arithmetic number, because the mean of its divisors is an integer number (34505581488).

Almost surely, 2^202104120021 is an apocalyptic number.

It is an amenable number.

202104120021 is a deficient number, since it is larger than the sum of its proper divisors (73940531883).

202104120021 is a wasteful number, since it uses less digits than its factorization.

202104120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1643122971.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 202104120021 its reverse (120021401202), we get a palindrome (322125521223).

The spelling of 202104120021 in words is "two hundred two billion, one hundred four million, one hundred twenty thousand, twenty-one".