2021422142279 has 2 divisors, whose sum is σ = 2021422142280. Its totient is φ = 2021422142278.

The previous prime is 2021422142071. The next prime is 2021422142351. The reversal of 2021422142279 is 9722412241202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021422142279 is a prime.

It is a super-2 number, since 2×2021422142279² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021422142879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010711071139 + 1010711071140.

It is an arithmetic number, because the mean of its divisors is an integer number (1010711071140).

Almost surely, 2^{2021422142279} is an apocalyptic number.

2021422142279 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021422142279 is an equidigital number, since it uses as much as digits as its factorization.

2021422142279 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64512, while the sum is 38.

The spelling of 2021422142279 in words is "two trillion, twenty-one billion, four hundred twenty-two million, one hundred forty-two thousand, two hundred seventy-nine".