221312130102131 has 4 divisors (see below), whose sum is σ = 234330490696392. Its totient is φ = 208293769507872.

The previous prime is 221312130102113. The next prime is 221312130102137. The reversal of 221312130102131 is 131201031213122.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221312130102131 is a prime.

It is a super-2 number, since 2×221312130102131² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 221312130102097 and 221312130102106.

It is not an unprimeable number, because it can be changed into a prime (221312130102137) 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, 6509180297105 + ... + 6509180297138.

It is an arithmetic number, because the mean of its divisors is an integer number (58582622674098).

Almost surely, 2^{221312130102131} is an apocalyptic number.

221312130102131 is a deficient number, since it is larger than the sum of its proper divisors (13018360594261).

221312130102131 is a wasteful number, since it uses less digits than its factorization.

221312130102131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13018360594260.

The product of its (nonzero) digits is 432, while the sum is 23.

Adding to 221312130102131 its reverse (131201031213122), we get a palindrome (352513161315253).

The spelling of 221312130102131 in words is "two hundred twenty-one trillion, three hundred twelve billion, one hundred thirty million, one hundred two thousand, one hundred thirty-one".