2131212100113 has 24 divisors (see below), whose sum is σ = 3186380061696. Its totient is φ = 1371228955200.

The previous prime is 2131212100109. The next prime is 2131212100117. The reversal of 2131212100113 is 3110012121312.

It is an interprime number because it is at equal distance from previous prime (2131212100109) and next prime (2131212100117).

It is not a de Polignac number, because 2131212100113 - 2² = 2131212100109 is a prime.

It is a super-2 number, since 2×2131212100113² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2131212100117) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10304628 + ... + 10509413.

It is an arithmetic number, because the mean of its divisors is an integer number (132765835904).

Almost surely, 2^{2131212100113} is an apocalyptic number.

It is an amenable number.

2131212100113 is a deficient number, since it is larger than the sum of its proper divisors (1055167961583).

2131212100113 is a wasteful number, since it uses less digits than its factorization.

2131212100113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20814445 (or 20814442 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 2131212100113 its reverse (3110012121312), we get a palindrome (5241224221425).

The spelling of 2131212100113 in words is "two trillion, one hundred thirty-one billion, two hundred twelve million, one hundred thousand, one hundred thirteen".