10231109621 has 2 divisors, whose sum is σ = 10231109622. Its totient is φ = 10231109620.

The previous prime is 10231109611. The next prime is 10231109641. The reversal of 10231109621 is 12690113201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7364042596 + 2867067025 = 85814^2 + 53545^2 .

It is a cyclic number.

It is not a de Polignac number, because 10231109621 - 2¹⁰ = 10231108597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10231109611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5115554810 + 5115554811.

It is an arithmetic number, because the mean of its divisors is an integer number (5115554811).

Almost surely, 2^10231109621 is an apocalyptic number.

It is an amenable number.

10231109621 is a deficient number, since it is larger than the sum of its proper divisors (1).

10231109621 is an equidigital number, since it uses as much as digits as its factorization.

10231109621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 648, while the sum is 26.

The spelling of 10231109621 in words is "ten billion, two hundred thirty-one million, one hundred nine thousand, six hundred twenty-one".