21232203121032 has 64 divisors (see below), whose sum is σ = 54917317612800. Its totient is φ = 6832550376960.

The previous prime is 21232203121009. The next prime is 21232203121057. The reversal of 21232203121032 is 23012130223212.

It is a super-2 number, since 2×21232203121032² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 21232203120993 and 21232203121011.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4155057 + ... + 7728447.

It is an arithmetic number, because the mean of its divisors is an integer number (858083087700).

Almost surely, 2^{21232203121032} is an apocalyptic number.

It is an amenable number.

21232203121032 is an abundant number, since it is smaller than the sum of its proper divisors (33685114491768).

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

21232203121032 is a wasteful number, since it uses less digits than its factorization.

21232203121032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3581966 (or 3581962 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21232203121032 its reverse (23012130223212), we get a palindrome (44244333344244).

The spelling of 21232203121032 in words is "twenty-one trillion, two hundred thirty-two billion, two hundred three million, one hundred twenty-one thousand, thirty-two".