21012003032032 has 12 divisors (see below), whose sum is σ = 41367380969376. Its totient is φ = 10506001516000.

The previous prime is 21012003031949. The next prime is 21012003032123. The reversal of 21012003032032 is 23023030021012.

It is a super-2 number, since 2×21012003032032² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328312547344 + ... + 328312547407.

It is an arithmetic number, because the mean of its divisors is an integer number (3447281747448).

Almost surely, 2^{21012003032032} is an apocalyptic number.

It is an amenable number.

21012003032032 is a deficient number, since it is larger than the sum of its proper divisors (20355377937344).

21012003032032 is an equidigital number, since it uses as much as digits as its factorization.

21012003032032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 656625094761 (or 656625094753 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21012003032032 its reverse (23023030021012), we get a palindrome (44035033053044).

The spelling of 21012003032032 in words is "twenty-one trillion, twelve billion, three million, thirty-two thousand, thirty-two".