21033121132 has 12 divisors (see below), whose sum is σ = 36821169616. Its totient is φ = 10512786960.

The previous prime is 21033121099. The next prime is 21033121159. The reversal of 21033121132 is 23112133012.

It is a super-2 number, since 2×21033121132² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 930843 + ... + 953170.

Almost surely, 2^21033121132 is an apocalyptic number.

It is an amenable number.

21033121132 is a deficient number, since it is larger than the sum of its proper divisors (15788048484).

21033121132 is a wasteful number, since it uses less digits than its factorization.

21033121132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1886808 (or 1886806 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 21033121132 its reverse (23112133012), we get a palindrome (44145254144).

The spelling of 21033121132 in words is "twenty-one billion, thirty-three million, one hundred twenty-one thousand, one hundred thirty-two".