101310100021 has 16 divisors (see below), whose sum is σ = 112301973504. Its totient is φ = 90806534784.

The previous prime is 101310099983. The next prime is 101310100039. The reversal of 101310100021 is 120001013101.

It is a cyclic number.

It is not a de Polignac number, because 101310100021 - 2¹⁹ = 101309575733 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 101310099980 and 101310100007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (101310101021) 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, 575200 + ... + 730393.

It is an arithmetic number, because the mean of its divisors is an integer number (7018873344).

Almost surely, 2^101310100021 is an apocalyptic number.

It is an amenable number.

101310100021 is a deficient number, since it is larger than the sum of its proper divisors (10991873483).

101310100021 is a wasteful number, since it uses less digits than its factorization.

101310100021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1305780.

The product of its (nonzero) digits is 6, while the sum is 10.

Adding to 101310100021 its reverse (120001013101), we get a palindrome (221311113122).

The spelling of 101310100021 in words is "one hundred one billion, three hundred ten million, one hundred thousand, twenty-one".