1231202221332 has 12 divisors (see below), whose sum is σ = 2872805183136. Its totient is φ = 410400740440.

The previous prime is 1231202221313. The next prime is 1231202221363. The reversal of 1231202221332 is 2331222021321.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×1231202221332² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51300092544 + ... + 51300092567.

It is an arithmetic number, because the mean of its divisors is an integer number (239400431928).

Almost surely, 2^{1231202221332} is an apocalyptic number.

1231202221332 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1231202221332 is an abundant number, since it is smaller than the sum of its proper divisors (1641602961804).

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

1231202221332 is a wasteful number, since it uses less digits than its factorization.

1231202221332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102600185118 (or 102600185116 counting only the distinct ones).

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

Adding to 1231202221332 its reverse (2331222021321), we get a palindrome (3562424242653).

The spelling of 1231202221332 in words is "one trillion, two hundred thirty-one billion, two hundred two million, two hundred twenty-one thousand, three hundred thirty-two".