21322103421323 has 4 divisors (see below), whose sum is σ = 21322148978520. Its totient is φ = 21322057864128.

The previous prime is 21322103421277. The next prime is 21322103421331. The reversal of 21322103421323 is 32312430122312.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 21322103421323 - 2³⁶ = 21253383944587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21322103421823) 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, 22069190 + ... + 23015067.

It is an arithmetic number, because the mean of its divisors is an integer number (5330537244630).

Almost surely, 2^{21322103421323} is an apocalyptic number.

21322103421323 is a deficient number, since it is larger than the sum of its proper divisors (45557197).

21322103421323 is an equidigital number, since it uses as much as digits as its factorization.

21322103421323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45557196.

The product of its (nonzero) digits is 10368, while the sum is 29.

Adding to 21322103421323 its reverse (32312430122312), we get a palindrome (53634533543635).

The spelling of 21322103421323 in words is "twenty-one trillion, three hundred twenty-two billion, one hundred three million, four hundred twenty-one thousand, three hundred twenty-three".