10031120121 has 16 divisors (see below), whose sum is σ = 14735187648. Its totient is φ = 6019272000.

The previous prime is 10031120119. The next prime is 10031120123. The reversal of 10031120121 is 12102113001.

It is an interprime number because it is at equal distance from previous prime (10031120119) and next prime (10031120123).

It is not a de Polignac number, because 10031120121 - 2¹ = 10031120119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10031120097 and 10031120106.

It is not an unprimeable number, because it can be changed into a prime (10031120123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1501486 + ... + 1508151.

It is an arithmetic number, because the mean of its divisors is an integer number (920949228).

Almost surely, 2^10031120121 is an apocalyptic number.

10031120121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10031120121 is a deficient number, since it is larger than the sum of its proper divisors (4704067527).

10031120121 is a wasteful number, since it uses less digits than its factorization.

10031120121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3009752.

The product of its (nonzero) digits is 12, while the sum is 12.

Adding to 10031120121 its reverse (12102113001), we get a palindrome (22133233122).

The spelling of 10031120121 in words is "ten billion, thirty-one million, one hundred twenty thousand, one hundred twenty-one".