21030122132 has 24 divisors (see below), whose sum is σ = 37674409920. Its totient is φ = 10268366400.

The previous prime is 21030122021. The next prime is 21030122143. The reversal of 21030122132 is 23122103012.

It is a self number, because there is not a number n which added to its sum of digits gives 21030122132.

It is a congruent number.

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, 259433 + ... + 330704.

It is an arithmetic number, because the mean of its divisors is an integer number (1569767080).

Almost surely, 2^21030122132 is an apocalyptic number.

It is an amenable number.

21030122132 is a deficient number, since it is larger than the sum of its proper divisors (16644287788).

21030122132 is a wasteful number, since it uses less digits than its factorization.

21030122132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590351 (or 590349 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 21030122132 its reverse (23122103012), we get a palindrome (44152225144).

The spelling of 21030122132 in words is "twenty-one billion, thirty million, one hundred twenty-two thousand, one hundred thirty-two".