220131221351 has 2 divisors, whose sum is σ = 220131221352. Its totient is φ = 220131221350.

The previous prime is 220131221311. The next prime is 220131221357. The reversal of 220131221351 is 153122131022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220131221351 - 2²² = 220127027047 is a prime.

It is a super-2 number, since 2×220131221351² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another 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 as a sum of consecutive naturals, namely, 110065610675 + 110065610676.

It is an arithmetic number, because the mean of its divisors is an integer number (110065610676).

Almost surely, 2^220131221351 is an apocalyptic number.

220131221351 is a deficient number, since it is larger than the sum of its proper divisors (1).

220131221351 is an equidigital number, since it uses as much as digits as its factorization.

220131221351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 720, while the sum is 23.

Adding to 220131221351 its reverse (153122131022), we get a palindrome (373253352373).

The spelling of 220131221351 in words is "two hundred twenty billion, one hundred thirty-one million, two hundred twenty-one thousand, three hundred fifty-one".