1220131213231 has 8 divisors (see below), whose sum is σ = 1395100022400. Its totient is φ = 1045328491608.

The previous prime is 1220131213207. The next prime is 1220131213241. The reversal of 1220131213231 is 1323121310221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220131213231 - 2⁹ = 1220131212719 is a prime.

It is a super-2 number, since 2×1220131213231² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220131213241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41506141 + ... + 41535526.

It is an arithmetic number, because the mean of its divisors is an integer number (174387502800).

Almost surely, 2^{1220131213231} is an apocalyptic number.

1220131213231 is a deficient number, since it is larger than the sum of its proper divisors (174968809169).

1220131213231 is an equidigital number, since it uses as much as digits as its factorization.

1220131213231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83043773.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 1220131213231 its reverse (1323121310221), we get a palindrome (2543252523452).

The spelling of 1220131213231 in words is "one trillion, two hundred twenty billion, one hundred thirty-one million, two hundred thirteen thousand, two hundred thirty-one".