1221331010232 has 64 divisors (see below), whose sum is σ = 3095572315680. Its totient is φ = 401479206912.

The previous prime is 1221331010219. The next prime is 1221331010287. The reversal of 1221331010232 is 2320101331221.

It is a junction number, because it is equal to n+sod(n) for n = 1221331010199 and 1221331010208.

It is a congruent number.

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, 14135868 + ... + 14222004.

Almost surely, 2^{1221331010232} is an apocalyptic number.

1221331010232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1221331010232 is an abundant number, since it is smaller than the sum of its proper divisors (1874241305448).

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

1221331010232 is a wasteful number, since it uses less digits than its factorization.

1221331010232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94312 (or 94308 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 21.

Adding to 1221331010232 its reverse (2320101331221), we get a palindrome (3541432341453).

The spelling of 1221331010232 in words is "one trillion, two hundred twenty-one billion, three hundred thirty-one million, ten thousand, two hundred thirty-two".