10231231233221 has 4 divisors (see below), whose sum is σ = 10231239143244. Its totient is φ = 10231223323200.

The previous prime is 10231231233217. The next prime is 10231231233227. The reversal of 10231231233221 is 12233213213201.

10231231233221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 2321018733121 + 7910212500100 = 1523489^2 + 2812510^2 .

It is a cyclic number.

It is not a de Polignac number, because 10231231233221 - 2² = 10231231233217 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10231231233227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1511690 + ... + 4769451.

It is an arithmetic number, because the mean of its divisors is an integer number (2557809785811).

Almost surely, 2^{10231231233221} is an apocalyptic number.

It is an amenable number.

10231231233221 is a deficient number, since it is larger than the sum of its proper divisors (7910023).

10231231233221 is an equidigital number, since it uses as much as digits as its factorization.

10231231233221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7910022.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 10231231233221 its reverse (12233213213201), we get a palindrome (22464444446422).

The spelling of 10231231233221 in words is "ten trillion, two hundred thirty-one billion, two hundred thirty-one million, two hundred thirty-three thousand, two hundred twenty-one".