2031012113121 has 6 divisors (see below), whose sum is σ = 2933684163410. Its totient is φ = 1354008075408.

The previous prime is 2031012113089. The next prime is 2031012113131. The reversal of 2031012113121 is 1213112101302.

2031012113121 is a `hidden beast` number, since 20 + 310 + 1 + 21 + 1 + 312 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1978804890000 + 52207223121 = 1406700^2 + 228489^2 .

It is not a de Polignac number, because 2031012113121 - 2⁵ = 2031012113089 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 2031012113094 and 2031012113103.

It is not an unprimeable number, because it can be changed into a prime (2031012113131) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 112834006276 + ... + 112834006293.

Almost surely, 2^{2031012113121} is an apocalyptic number.

It is an amenable number.

2031012113121 is a deficient number, since it is larger than the sum of its proper divisors (902672050289).

2031012113121 is a wasteful number, since it uses less digits than its factorization.

2031012113121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225668012575 (or 225668012572 counting only the distinct ones).

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

Adding to 2031012113121 its reverse (1213112101302), we get a palindrome (3244124214423).

The spelling of 2031012113121 in words is "two trillion, thirty-one billion, twelve million, one hundred thirteen thousand, one hundred twenty-one".