21230122339 has 2 divisors, whose sum is σ = 21230122340. Its totient is φ = 21230122338.

The previous prime is 21230122273. The next prime is 21230122399. The reversal of 21230122339 is 93322103212.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21230122339 - 2¹¹ = 21230120291 is a prime.

It is not a weakly prime, because it can be changed into another prime (21230122399) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10615061169 + 10615061170.

It is an arithmetic number, because the mean of its divisors is an integer number (10615061170).

Almost surely, 2^21230122339 is an apocalyptic number.

21230122339 is a deficient number, since it is larger than the sum of its proper divisors (1).

21230122339 is an equidigital number, since it uses as much as digits as its factorization.

21230122339 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 28.

The spelling of 21230122339 in words is "twenty-one billion, two hundred thirty million, one hundred twenty-two thousand, three hundred thirty-nine".