21222000122039 has 2 divisors, whose sum is σ = 21222000122040. Its totient is φ = 21222000122038.

The previous prime is 21222000121957. The next prime is 21222000122041. The reversal of 21222000122039 is 93022100022212.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21222000122039 is a prime.

Together with 21222000122041, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 21222000121999 and 21222000122017.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21222000121039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10611000061019 + 10611000061020.

It is an arithmetic number, because the mean of its divisors is an integer number (10611000061020).

Almost surely, 2^{21222000122039} is an apocalyptic number.

21222000122039 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222000122039 is an equidigital number, since it uses as much as digits as its factorization.

21222000122039 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 21222000122039 in words is "twenty-one trillion, two hundred twenty-two billion, one hundred twenty-two thousand, thirty-nine".