162822421 has 2 divisors, whose sum is σ = 162822422. Its totient is φ = 162822420.

The previous prime is 162822377. The next prime is 162822427. The reversal of 162822421 is 124228261.

162822421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 151167025 + 11655396 = 12295^2 + 3414^2 .

It is a cyclic number.

It is not a de Polignac number, because 162822421 - 2⁷ = 162822293 is a prime.

It is a super-2 number, since 2×162822421² = 53022281560602482, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 162822421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162822427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81411210 + 81411211.

It is an arithmetic number, because the mean of its divisors is an integer number (81411211).

Almost surely, 2^162822421 is an apocalyptic number.

It is an amenable number.

162822421 is a deficient number, since it is larger than the sum of its proper divisors (1).

162822421 is an equidigital number, since it uses as much as digits as its factorization.

162822421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3072, while the sum is 28.

The square root of 162822421 is about 12760.1889092599. The cubic root of 162822421 is about 546.0571138491.

The spelling of 162822421 in words is "one hundred sixty-two million, eight hundred twenty-two thousand, four hundred twenty-one".