21200022020323 has 2 divisors, whose sum is σ = 21200022020324. Its totient is φ = 21200022020322.

The previous prime is 21200022020299. The next prime is 21200022020341. The reversal of 21200022020323 is 32302022000212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21200022020323 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 21200022020323.

It is not a weakly prime, because it can be changed into another prime (21200022020923) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10600011010161 + 10600011010162.

It is an arithmetic number, because the mean of its divisors is an integer number (10600011010162).

Almost surely, 2^{21200022020323} is an apocalyptic number.

21200022020323 is a deficient number, since it is larger than the sum of its proper divisors (1).

21200022020323 is an equidigital number, since it uses as much as digits as its factorization.

21200022020323 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 19.

Adding to 21200022020323 its reverse (32302022000212), we get a palindrome (53502044020535).

The spelling of 21200022020323 in words is "twenty-one trillion, two hundred billion, twenty-two million, twenty thousand, three hundred twenty-three".