220131221307 has 16 divisors (see below), whose sum is σ = 327129989760. Its totient is φ = 130851994752.

The previous prime is 220131221267. The next prime is 220131221311. The reversal of 220131221307 is 703122131022.

It is a happy number.

It is not a de Polignac number, because 220131221307 - 2⁷ = 220131221179 is a prime.

It is a super-2 number, since 2×220131221307² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (220131221357) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 113585833 + ... + 113587770.

It is an arithmetic number, because the mean of its divisors is an integer number (20445624360).

Almost surely, 2^220131221307 is an apocalyptic number.

220131221307 is a deficient number, since it is larger than the sum of its proper divisors (106998768453).

220131221307 is a wasteful number, since it uses less digits than its factorization.

220131221307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227173642.

The product of its (nonzero) digits is 1008, while the sum is 24.

Adding to 220131221307 its reverse (703122131022), we get a palindrome (923253352329).

The spelling of 220131221307 in words is "two hundred twenty billion, one hundred thirty-one million, two hundred twenty-one thousand, three hundred seven".