21222020313379 has 2 divisors, whose sum is σ = 21222020313380. Its totient is φ = 21222020313378.

The previous prime is 21222020313337. The next prime is 21222020313397. The reversal of 21222020313379 is 97331302022212.

Together with next prime (21222020313397) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21222020313379 - 2²¹ = 21222018216227 is a prime.

It is not a weakly prime, because it can be changed into another prime (21222020313679) 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, 10611010156689 + 10611010156690.

It is an arithmetic number, because the mean of its divisors is an integer number (10611010156690).

Almost surely, 2^{21222020313379} is an apocalyptic number.

21222020313379 is a deficient number, since it is larger than the sum of its proper divisors (1).

21222020313379 is an equidigital number, since it uses as much as digits as its factorization.

21222020313379 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 37.

The spelling of 21222020313379 in words is "twenty-one trillion, two hundred twenty-two billion, twenty million, three hundred thirteen thousand, three hundred seventy-nine".