10402223103521 has 2 divisors, whose sum is σ = 10402223103522. Its totient is φ = 10402223103520.

The previous prime is 10402223103469. The next prime is 10402223103529. The reversal of 10402223103521 is 12530132220401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5725228635025 + 4676994468496 = 2392745^2 + 2162636^2 .

It is a cyclic number.

It is not a de Polignac number, because 10402223103521 - 2⁶ = 10402223103457 is a prime.

It is not a weakly prime, because it can be changed into another prime (10402223103529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5201111551760 + 5201111551761.

It is an arithmetic number, because the mean of its divisors is an integer number (5201111551761).

Almost surely, 2^{10402223103521} is an apocalyptic number.

It is an amenable number.

10402223103521 is a deficient number, since it is larger than the sum of its proper divisors (1).

10402223103521 is an equidigital number, since it uses as much as digits as its factorization.

10402223103521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2880, while the sum is 26.

Adding to 10402223103521 its reverse (12530132220401), we get a palindrome (22932355323922).

The spelling of 10402223103521 in words is "ten trillion, four hundred two billion, two hundred twenty-three million, one hundred three thousand, five hundred twenty-one".