21101310103331 has 2 divisors, whose sum is σ = 21101310103332. Its totient is φ = 21101310103330.

The previous prime is 21101310103319. The next prime is 21101310103333. The reversal of 21101310103331 is 13330101310112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21101310103331 - 2²⁶ = 21101242994467 is a prime.

It is a super-2 number, since 2×21101310103331² (a number of 27 digits) contains 22 as substring.

Together with 21101310103333, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (21101310103333) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10550655051665 + 10550655051666.

It is an arithmetic number, because the mean of its divisors is an integer number (10550655051666).

Almost surely, 2^{21101310103331} is an apocalyptic number.

21101310103331 is a deficient number, since it is larger than the sum of its proper divisors (1).

21101310103331 is an equidigital number, since it uses as much as digits as its factorization.

21101310103331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 162, while the sum is 20.

Adding to 21101310103331 its reverse (13330101310112), we get a palindrome (34431411413443).

The spelling of 21101310103331 in words is "twenty-one trillion, one hundred one billion, three hundred ten million, one hundred three thousand, three hundred thirty-one".