10131122101021 has 4 divisors (see below), whose sum is σ = 10163081477052. Its totient is φ = 10099162724992.

The previous prime is 10131122100971. The next prime is 10131122101027. The reversal of 10131122101021 is 12010122113101.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 3007747929796 + 7123374171225 = 1734286^2 + 2668965^2 .

It is a cyclic number.

It is not a de Polignac number, because 10131122101021 - 2¹¹ = 10131122098973 is a prime.

It is a super-2 number, since 2×10131122101021² (a number of 27 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 = 10131122100986 and 10131122101004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10131122101027) 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, 15979687540 + ... + 15979688173.

It is an arithmetic number, because the mean of its divisors is an integer number (2540770369263).

Almost surely, 2^{10131122101021} is an apocalyptic number.

It is an amenable number.

10131122101021 is a deficient number, since it is larger than the sum of its proper divisors (31959376031).

10131122101021 is an equidigital number, since it uses as much as digits as its factorization.

10131122101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31959376030.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 10131122101021 its reverse (12010122113101), we get a palindrome (22141244214122).

The spelling of 10131122101021 in words is "ten trillion, one hundred thirty-one billion, one hundred twenty-two million, one hundred one thousand, twenty-one".