2122012312131 has 4 divisors (see below), whose sum is σ = 2829349749512. Its totient is φ = 1414674874752.

The previous prime is 2122012312103. The next prime is 2122012312141. The reversal of 2122012312131 is 1312132102212.

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

It is not a de Polignac number, because 2122012312131 - 2⁵ = 2122012312099 is a prime.

It is a super-2 number, since 2×2122012312131² (a number of 25 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 = 2122012312098 and 2122012312107.

It is not an unprimeable number, because it can be changed into a prime (2122012312141) 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, 353668718686 + ... + 353668718691.

It is an arithmetic number, because the mean of its divisors is an integer number (707337437378).

Almost surely, 2^{2122012312131} is an apocalyptic number.

2122012312131 is a deficient number, since it is larger than the sum of its proper divisors (707337437381).

2122012312131 is an equidigital number, since it uses as much as digits as its factorization.

2122012312131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 707337437380.

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 2122012312131 its reverse (1312132102212), we get a palindrome (3434144414343).

The spelling of 2122012312131 in words is "two trillion, one hundred twenty-two billion, twelve million, three hundred twelve thousand, one hundred thirty-one".