21100223310311 has 2 divisors, whose sum is σ = 21100223310312. Its totient is φ = 21100223310310.

The previous prime is 21100223310301. The next prime is 21100223310329. The reversal of 21100223310311 is 11301332200112.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21100223310311 - 2¹⁸ = 21100223048167 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21100223310301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550111655155 + 10550111655156.

It is an arithmetic number, because the mean of its divisors is an integer number (10550111655156).

Almost surely, 2^{21100223310311} is an apocalyptic number.

21100223310311 is a deficient number, since it is larger than the sum of its proper divisors (1).

21100223310311 is an equidigital number, since it uses as much as digits as its factorization.

21100223310311 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 21100223310311 its reverse (11301332200112), we get a palindrome (32401555510423).

The spelling of 21100223310311 in words is "twenty-one trillion, one hundred billion, two hundred twenty-three million, three hundred ten thousand, three hundred eleven".