21122344139327 has 2 divisors, whose sum is σ = 21122344139328. Its totient is φ = 21122344139326.

The previous prime is 21122344139297. The next prime is 21122344139329. The reversal of 21122344139327 is 72393144322112.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21122344139327 - 2²² = 21122339945023 is a prime.

Together with 21122344139329, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21122344139329) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10561172069663 + 10561172069664.

It is an arithmetic number, because the mean of its divisors is an integer number (10561172069664).

Almost surely, 2^{21122344139327} is an apocalyptic number.

21122344139327 is a deficient number, since it is larger than the sum of its proper divisors (1).

21122344139327 is an equidigital number, since it uses as much as digits as its factorization.

21122344139327 is an evil number, because the sum of its binary digits is even.

The product of its digits is 435456, while the sum is 44.

The spelling of 21122344139327 in words is "twenty-one trillion, one hundred twenty-two billion, three hundred forty-four million, one hundred thirty-nine thousand, three hundred twenty-seven".