10123031020021 has 16 divisors (see below), whose sum is σ = 10380561048000. Its totient is φ = 9866522631168.

The previous prime is 10123031020009. The next prime is 10123031020043. The reversal of 10123031020021 is 12002013032101.

It is a cyclic number.

It is not a de Polignac number, because 10123031020021 - 2⁹ = 10123031019509 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10123031019977 and 10123031020004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10123031020321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51778965 + ... + 51974101.

It is an arithmetic number, because the mean of its divisors is an integer number (648785065500).

Almost surely, 2^{10123031020021} is an apocalyptic number.

It is an amenable number.

10123031020021 is a deficient number, since it is larger than the sum of its proper divisors (257530027979).

10123031020021 is a wasteful number, since it uses less digits than its factorization.

10123031020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197748.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 10123031020021 its reverse (12002013032101), we get a palindrome (22125044052122).

The spelling of 10123031020021 in words is "ten trillion, one hundred twenty-three billion, thirty-one million, twenty thousand, twenty-one".