1221102312232 has 16 divisors (see below), whose sum is σ = 2497709275200. Its totient is φ = 555046505520.

The previous prime is 1221102312229. The next prime is 1221102312247. The reversal of 1221102312232 is 2322132011221.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6938081232 + ... + 6938081407.

It is an arithmetic number, because the mean of its divisors is an integer number (156106829700).

Almost surely, 2^{1221102312232} is an apocalyptic number.

It is an amenable number.

1221102312232 is an abundant number, since it is smaller than the sum of its proper divisors (1276606962968).

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

1221102312232 is a wasteful number, since it uses less digits than its factorization.

1221102312232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13876162656 (or 13876162652 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 1221102312232 its reverse (2322132011221), we get a palindrome (3543234323453).

It can be divided in two parts, 122110 and 2312232, that added together give a palindrome (2434342).

The spelling of 1221102312232 in words is "one trillion, two hundred twenty-one billion, one hundred two million, three hundred twelve thousand, two hundred thirty-two".