1012131020121 has 16 divisors (see below), whose sum is σ = 1516504004736. Its totient is φ = 595769429376.

The previous prime is 1012131020113. The next prime is 1012131020137. The reversal of 1012131020121 is 1210201312101.

It is not a de Polignac number, because 1012131020121 - 2³ = 1012131020113 is a prime.

It is a super-2 number, since 2×1012131020121² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1012131020121.

It is not an unprimeable number, because it can be changed into a prime (1012131020141) 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, 564174700 + ... + 564176493.

It is an arithmetic number, because the mean of its divisors is an integer number (94781500296).

Almost surely, 2^{1012131020121} is an apocalyptic number.

It is an amenable number.

1012131020121 is a deficient number, since it is larger than the sum of its proper divisors (504372984615).

1012131020121 is a wasteful number, since it uses less digits than its factorization.

1012131020121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1128351232.

The product of its (nonzero) digits is 24, while the sum is 15.

Adding to 1012131020121 its reverse (1210201312101), we get a palindrome (2222332332222).

The spelling of 1012131020121 in words is "one trillion, twelve billion, one hundred thirty-one million, twenty thousand, one hundred twenty-one".