10001221232 has 10 divisors (see below), whose sum is σ = 19377366168. Its totient is φ = 5000610608.

The previous prime is 10001221231. The next prime is 10001221247. The reversal of 10001221232 is 23212210001.

It is a happy number.

It is a super-2 number, since 2×10001221232² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10001221231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 312538148 + ... + 312538179.

Almost surely, 2^10001221232 is an apocalyptic number.

It is an amenable number.

10001221232 is a deficient number, since it is larger than the sum of its proper divisors (9376144936).

10001221232 is an equidigital number, since it uses as much as digits as its factorization.

10001221232 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625076335 (or 625076329 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 10001221232 its reverse (23212210001), we get a palindrome (33213431233).

The spelling of 10001221232 in words is "ten billion, one million, two hundred twenty-one thousand, two hundred thirty-two".