10206231631621 has 2 divisors, whose sum is σ = 10206231631622. Its totient is φ = 10206231631620.

The previous prime is 10206231631601. The next prime is 10206231631627. The reversal of 10206231631621 is 12613613260201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6620457650625 + 3585773980996 = 2573025^2 + 1893614^2 .

It is a cyclic number.

It is not a de Polignac number, because 10206231631621 - 2³⁹ = 9656475817733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10206231631627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5103115815810 + 5103115815811.

It is an arithmetic number, because the mean of its divisors is an integer number (5103115815811).

Almost surely, 2^{10206231631621} is an apocalyptic number.

It is an amenable number.

10206231631621 is a deficient number, since it is larger than the sum of its proper divisors (1).

10206231631621 is an equidigital number, since it uses as much as digits as its factorization.

10206231631621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 34.

Adding to 10206231631621 its reverse (12613613260201), we get a palindrome (22819844891822).

The spelling of 10206231631621 in words is "ten trillion, two hundred six billion, two hundred thirty-one million, six hundred thirty-one thousand, six hundred twenty-one".