21020202223132 has 24 divisors (see below), whose sum is σ = 42102871652576. Its totient is φ = 8995272265728.

The previous prime is 21020202223117. The next prime is 21020202223157. The reversal of 21020202223132 is 23132220202012.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 557723733 + ... + 557761420.

Almost surely, 2^{21020202223132} is an apocalyptic number.

It is an amenable number.

21020202223132 is an abundant number, since it is smaller than the sum of its proper divisors (21082669429444).

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

21020202223132 is a wasteful number, since it uses less digits than its factorization.

21020202223132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115485837 (or 1115485835 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21020202223132 its reverse (23132220202012), we get a palindrome (44152422425144).

The spelling of 21020202223132 in words is "twenty-one trillion, twenty billion, two hundred two million, two hundred twenty-three thousand, one hundred thirty-two".