21292532001 has 72 divisors (see below), whose sum is σ = 36029535360. Its totient is φ = 12011820480.

The previous prime is 21292531987. The next prime is 21292532017. The reversal of 21292532001 is 10023529212.

It is a happy number.

21292532001 is a `hidden beast` number, since 2 + 129 + 2 + 532 + 0 + 0 + 1 = 666.

It is not a de Polignac number, because 21292532001 - 2²⁷ = 21158314273 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21292532101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2131320 + ... + 2141286.

Almost surely, 2^21292532001 is an apocalyptic number.

It is an amenable number.

21292532001 is a deficient number, since it is larger than the sum of its proper divisors (14737003359).

21292532001 is a wasteful number, since it uses less digits than its factorization.

21292532001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10067 (or 10033 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The spelling of 21292532001 in words is "twenty-one billion, two hundred ninety-two million, five hundred thirty-two thousand, one".