10231040021 has 4 divisors (see below), whose sum is σ = 10675867872. Its totient is φ = 9786212172.

The previous prime is 10231039999. The next prime is 10231040051. The reversal of 10231040021 is 12004013201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12004013201 = 73 ⋅164438537.

It is a cyclic number.

It is not a de Polignac number, because 10231040021 - 2¹⁸ = 10230777877 is a prime.

It is a super-2 number, since 2×10231040021² (a number of 21 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 = 10231039978 and 10231040005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10231040051) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222413891 + ... + 222413936.

It is an arithmetic number, because the mean of its divisors is an integer number (2668966968).

Almost surely, 2^10231040021 is an apocalyptic number.

It is an amenable number.

10231040021 is a deficient number, since it is larger than the sum of its proper divisors (444827851).

10231040021 is an equidigital number, since it uses as much as digits as its factorization.

10231040021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444827850.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 10231040021 its reverse (12004013201), we get a palindrome (22235053222).

The spelling of 10231040021 in words is "ten billion, two hundred thirty-one million, forty thousand, twenty-one".