1220132013231 has 16 divisors (see below), whose sum is σ = 1680390632448. Its totient is φ = 786680779200.

The previous prime is 1220132013227. The next prime is 1220132013251. The reversal of 1220132013231 is 1323102310221.

It is not a de Polignac number, because 1220132013231 - 2² = 1220132013227 is a prime.

It is a super-2 number, since 2×1220132013231² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220132013198 and 1220132013207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220132013251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4029486 + ... + 4321691.

It is an arithmetic number, because the mean of its divisors is an integer number (105024414528).

Almost surely, 2^{1220132013231} is an apocalyptic number.

1220132013231 is a deficient number, since it is larger than the sum of its proper divisors (460258619217).

1220132013231 is a wasteful number, since it uses less digits than its factorization.

1220132013231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8352782.

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

Adding to 1220132013231 its reverse (1323102310221), we get a palindrome (2543234323452).

The spelling of 1220132013231 in words is "one trillion, two hundred twenty billion, one hundred thirty-two million, thirteen thousand, two hundred thirty-one".