131310221122111 has 4 divisors (see below), whose sum is σ = 132344159871232. Its totient is φ = 130276282372992.

The previous prime is 131310221122103. The next prime is 131310221122169. The reversal of 131310221122111 is 111221122013131.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 131310221122111 - 2³ = 131310221122103 is a prime.

It is a super-2 number, since 2×131310221122111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (131310221122211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 516969374370 + ... + 516969374623.

It is an arithmetic number, because the mean of its divisors is an integer number (33086039967808).

Almost surely, 2^{131310221122111} is an apocalyptic number.

131310221122111 is a deficient number, since it is larger than the sum of its proper divisors (1033938749121).

131310221122111 is a wasteful number, since it uses less digits than its factorization.

131310221122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1033938749120.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 131310221122111 its reverse (111221122013131), we get a palindrome (242531343135242).

The spelling of 131310221122111 in words is "one hundred thirty-one trillion, three hundred ten billion, two hundred twenty-one million, one hundred twenty-two thousand, one hundred eleven".