220131221267 has 2 divisors, whose sum is σ = 220131221268. Its totient is φ = 220131221266.

The previous prime is 220131221227. The next prime is 220131221311. The reversal of 220131221267 is 762122131022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 220131221267 - 2¹² = 220131217171 is a prime.

It is not a weakly prime, because it can be changed into another prime (220131221227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110065610633 + 110065610634.

It is an arithmetic number, because the mean of its divisors is an integer number (110065610634).

Almost surely, 2^220131221267 is an apocalyptic number.

220131221267 is a deficient number, since it is larger than the sum of its proper divisors (1).

220131221267 is an equidigital number, since it uses as much as digits as its factorization.

220131221267 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 29.

Adding to 220131221267 its reverse (762122131022), we get a palindrome (982253352289).

The spelling of 220131221267 in words is "two hundred twenty billion, one hundred thirty-one million, two hundred twenty-one thousand, two hundred sixty-seven".