21302020332 has 24 divisors (see below), whose sum is σ = 55227460400. Its totient is φ = 7100673408.

The previous prime is 21302020319. The next prime is 21302020409. The reversal of 21302020332 is 23302020312.

It is a happy number.

21302020332 is a `hidden beast` number, since 2 + 130 + 202 + 0 + 332 = 666.

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 7 ways as a sum of consecutive naturals, for example, 98620357 + ... + 98620572.

Almost surely, 2^21302020332 is an apocalyptic number.

It is an amenable number.

21302020332 is an abundant number, since it is smaller than the sum of its proper divisors (33925440068).

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

21302020332 is a wasteful number, since it uses less digits than its factorization.

21302020332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197240942 (or 197240934 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 21302020332 its reverse (23302020312), we get a palindrome (44604040644).

The spelling of 21302020332 in words is "twenty-one billion, three hundred two million, twenty thousand, three hundred thirty-two".