10310120021 has 16 divisors (see below), whose sum is σ = 10548472176. Its totient is φ = 10074240000.

The previous prime is 10310120011. The next prime is 10310120077. The reversal of 10310120021 is 12002101301.

It can be written as a sum of positive squares in 8 ways, for example, as 47416996 + 10262703025 = 6886^2 + 101305^2 .

It is a cyclic number.

It is not a de Polignac number, because 10310120021 - 2⁶ = 10310119957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10310119984 and 10310120011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10310120011) 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, 9716831 + ... + 9717891.

It is an arithmetic number, because the mean of its divisors is an integer number (659279511).

Almost surely, 2^10310120021 is an apocalyptic number.

It is an amenable number.

10310120021 is a deficient number, since it is larger than the sum of its proper divisors (238352155).

10310120021 is a wasteful number, since it uses less digits than its factorization.

10310120021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2024.

The product of its (nonzero) digits is 12, while the sum is 11.

Adding to 10310120021 its reverse (12002101301), we get a palindrome (22312221322).

The spelling of 10310120021 in words is "ten billion, three hundred ten million, one hundred twenty thousand, twenty-one".