21020332002204 has 48 divisors (see below), whose sum is σ = 50246027306496. Its totient is φ = 6835566460800.

The previous prime is 21020332002203. The next prime is 21020332002259. The reversal of 21020332002204 is 40220023302012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21020332002203) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9867469 + ... + 11807099.

It is an arithmetic number, because the mean of its divisors is an integer number (1046792235552).

Almost surely, 2^{21020332002204} is an apocalyptic number.

It is an amenable number.

21020332002204 is an abundant number, since it is smaller than the sum of its proper divisors (29225695304292).

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

21020332002204 is a wasteful number, since it uses less digits than its factorization.

21020332002204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1961706 (or 1961704 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

Adding to 21020332002204 its reverse (40220023302012), we get a palindrome (61240355304216).

The spelling of 21020332002204 in words is "twenty-one trillion, twenty billion, three hundred thirty-two million, two thousand, two hundred four".