101010131021 has 16 divisors (see below), whose sum is σ = 113493571200. Its totient is φ = 89393660928.

The previous prime is 101010131011. The next prime is 101010131023. The reversal of 101010131021 is 120131010101.

It is a happy number.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-101010131021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101010130993 and 101010131011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101010131023) 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, 2166236 + ... + 2212373.

It is an arithmetic number, because the mean of its divisors is an integer number (7093348200).

Almost surely, 2^101010131021 is an apocalyptic number.

It is an amenable number.

101010131021 is a deficient number, since it is larger than the sum of its proper divisors (12483440179).

101010131021 is a wasteful number, since it uses less digits than its factorization.

101010131021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4378708.

The product of its (nonzero) digits is 6, while the sum is 11.

Adding to 101010131021 its reverse (120131010101), we get a palindrome (221141141122).

The spelling of 101010131021 in words is "one hundred one billion, ten million, one hundred thirty-one thousand, twenty-one".