131213021112121 has 8 divisors (see below), whose sum is σ = 145864599152384. Its totient is φ = 117212624318160.

The previous prime is 131213021112101. The next prime is 131213021112139. The reversal of 131213021112121 is 121211120312131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 131213021112121 - 2³³ = 131204431177529 is a prime.

It is a super-2 number, since 2×131213021112121² (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 = 131213021112092 and 131213021112101.

It is not an unprimeable number, because it can be changed into a prime (131213021112101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162795311151 + ... + 162795311956.

It is an arithmetic number, because the mean of its divisors is an integer number (18233074894048).

Almost surely, 2^{131213021112121} is an apocalyptic number.

It is an amenable number.

131213021112121 is a deficient number, since it is larger than the sum of its proper divisors (14651578040263).

131213021112121 is a wasteful number, since it uses less digits than its factorization.

131213021112121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325590623151.

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

Adding to 131213021112121 its reverse (121211120312131), we get a palindrome (252424141424252).

The spelling of 131213021112121 in words is "one hundred thirty-one trillion, two hundred thirteen billion, twenty-one million, one hundred twelve thousand, one hundred twenty-one".