9992120131 has 12 divisors (see below), whose sum is σ = 11700472080. Its totient is φ = 8507948400.

The previous prime is 9992120129. The next prime is 9992120153. The reversal of 9992120131 is 1310212999.

It is a happy number.

9992120131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 9992120131 - 2¹ = 9992120129 is a prime.

It is a super-2 number, since 2×9992120131² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (9992120101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 667836 + ... + 682633.

It is an arithmetic number, because the mean of its divisors is an integer number (975039340).

Almost surely, 2^9992120131 is an apocalyptic number.

9992120131 is a deficient number, since it is larger than the sum of its proper divisors (1708351949).

9992120131 is a wasteful number, since it uses less digits than its factorization.

9992120131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1350634 (or 1350627 counting only the distinct ones).

The product of its (nonzero) digits is 8748, while the sum is 37.

The square root of 9992120131 is about 99960.5928903986. The cubic root of 9992120131 is about 2153.8686525583.

The spelling of 9992120131 in words is "nine billion, nine hundred ninety-two million, one hundred twenty thousand, one hundred thirty-one".