220131221311 has 2 divisors, whose sum is σ = 220131221312. Its totient is φ = 220131221310.

The previous prime is 220131221267. The next prime is 220131221351. The reversal of 220131221311 is 113122131022.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 220131221311 - 2¹³ = 220131213119 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (220131221351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110065610655 + 110065610656.

It is an arithmetic number, because the mean of its divisors is an integer number (110065610656).

Almost surely, 2^220131221311 is an apocalyptic number.

220131221311 is a deficient number, since it is larger than the sum of its proper divisors (1).

220131221311 is an equidigital number, since it uses as much as digits as its factorization.

220131221311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 220131221311 its reverse (113122131022), we get a palindrome (333253352333).

The spelling of 220131221311 in words is "two hundred twenty billion, one hundred thirty-one million, two hundred twenty-one thousand, three hundred eleven".