131220022111 has 2 divisors, whose sum is σ = 131220022112. Its totient is φ = 131220022110.

The previous prime is 131220022099. The next prime is 131220022133. The reversal of 131220022111 is 111220022131.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 131220022111 - 2¹⁵ = 131219989343 is a prime.

It is a super-2 number, since 2×131220022111² (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 (131220020111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65610011055 + 65610011056.

It is an arithmetic number, because the mean of its divisors is an integer number (65610011056).

Almost surely, 2^131220022111 is an apocalyptic number.

131220022111 is a deficient number, since it is larger than the sum of its proper divisors (1).

131220022111 is an equidigital number, since it uses as much as digits as its factorization.

131220022111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 131220022111 its reverse (111220022131), we get a palindrome (242440044242).

The spelling of 131220022111 in words is "one hundred thirty-one billion, two hundred twenty million, twenty-two thousand, one hundred eleven".