21002013221107 has 2 divisors, whose sum is σ = 21002013221108. Its totient is φ = 21002013221106.

The previous prime is 21002013220999. The next prime is 21002013221149. The reversal of 21002013221107 is 70112231020012.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21002013221107 - 2¹⁵ = 21002013188339 is a prime.

It is not a weakly prime, because it can be changed into another prime (21002013221407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10501006610553 + 10501006610554.

It is an arithmetic number, because the mean of its divisors is an integer number (10501006610554).

Almost surely, 2^{21002013221107} is an apocalyptic number.

21002013221107 is a deficient number, since it is larger than the sum of its proper divisors (1).

21002013221107 is an equidigital number, since it uses as much as digits as its factorization.

21002013221107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 336, while the sum is 22.

Adding to 21002013221107 its reverse (70112231020012), we get a palindrome (91114244241119).

The spelling of 21002013221107 in words is "twenty-one trillion, two billion, thirteen million, two hundred twenty-one thousand, one hundred seven".