21302130211211 has 2 divisors, whose sum is σ = 21302130211212. Its totient is φ = 21302130211210.

The previous prime is 21302130211157. The next prime is 21302130211217. The reversal of 21302130211211 is 11211203120312.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21302130211211 - 2²² = 21302126016907 is a prime.

It is not a weakly prime, because it can be changed into another prime (21302130211217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10651065105605 + 10651065105606.

It is an arithmetic number, because the mean of its divisors is an integer number (10651065105606).

Almost surely, 2^{21302130211211} is an apocalyptic number.

21302130211211 is a deficient number, since it is larger than the sum of its proper divisors (1).

21302130211211 is an equidigital number, since it uses as much as digits as its factorization.

21302130211211 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 20.

Adding to 21302130211211 its reverse (11211203120312), we get a palindrome (32513333331523).

The spelling of 21302130211211 in words is "twenty-one trillion, three hundred two billion, one hundred thirty million, two hundred eleven thousand, two hundred eleven".