21422022379 has 2 divisors, whose sum is σ = 21422022380. Its totient is φ = 21422022378.

The previous prime is 21422022367. The next prime is 21422022443. The reversal of 21422022379 is 97322022412.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21422022379 - 2²¹ = 21419925227 is a prime.

It is not a weakly prime, because it can be changed into another prime (21422022319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10711011189 + 10711011190.

It is an arithmetic number, because the mean of its divisors is an integer number (10711011190).

Almost surely, 2^21422022379 is an apocalyptic number.

21422022379 is a deficient number, since it is larger than the sum of its proper divisors (1).

21422022379 is an equidigital number, since it uses as much as digits as its factorization.

21422022379 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24192, while the sum is 34.

The spelling of 21422022379 in words is "twenty-one billion, four hundred twenty-two million, twenty-two thousand, three hundred seventy-nine".