21102210402323 has 2 divisors, whose sum is σ = 21102210402324. Its totient is φ = 21102210402322.

The previous prime is 21102210402283. The next prime is 21102210402373. The reversal of 21102210402323 is 32320401220112.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21102210402323 - 2³² = 21097915435027 is a prime.

It is not a weakly prime, because it can be changed into another prime (21102210402373) 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, 10551105201161 + 10551105201162.

It is an arithmetic number, because the mean of its divisors is an integer number (10551105201162).

Almost surely, 2^{21102210402323} is an apocalyptic number.

21102210402323 is a deficient number, since it is larger than the sum of its proper divisors (1).

21102210402323 is an equidigital number, since it uses as much as digits as its factorization.

21102210402323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21102210402323 its reverse (32320401220112), we get a palindrome (53422611622435).

The spelling of 21102210402323 in words is "twenty-one trillion, one hundred two billion, two hundred ten million, four hundred two thousand, three hundred twenty-three".