10231120021 has 2 divisors, whose sum is σ = 10231120022. Its totient is φ = 10231120020.

The previous prime is 10231120001. The next prime is 10231120027. The reversal of 10231120021 is 12002113201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10043046225 + 188073796 = 100215^2 + 13714^2 .

It is a cyclic number.

It is not a de Polignac number, because 10231120021 - 2⁷ = 10231119893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10231119983 and 10231120010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10231120027) 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 as a sum of consecutive naturals, namely, 5115560010 + 5115560011.

It is an arithmetic number, because the mean of its divisors is an integer number (5115560011).

Almost surely, 2^10231120021 is an apocalyptic number.

It is an amenable number.

10231120021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10231120021 is an equidigital number, since it uses as much as digits as its factorization.

10231120021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 10231120021 its reverse (12002113201), we get a palindrome (22233233222).

The spelling of 10231120021 in words is "ten billion, two hundred thirty-one million, one hundred twenty thousand, twenty-one".