162022921 has 4 divisors (see below), whose sum is σ = 162862612. Its totient is φ = 161183232.

The previous prime is 162022919. The next prime is 162022933. The reversal of 162022921 is 129220261.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 117614025 + 44408896 = 10845^2 + 6664^2 .

It is a cyclic number.

It is not a de Polignac number, because 162022921 - 2¹ = 162022919 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (162023921) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 419556 + ... + 419941.

It is an arithmetic number, because the mean of its divisors is an integer number (40715653).

Almost surely, 2^162022921 is an apocalyptic number.

It is an amenable number.

162022921 is a deficient number, since it is larger than the sum of its proper divisors (839691).

162022921 is an equidigital number, since it uses as much as digits as its factorization.

162022921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 839690.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 162022921 is about 12728.8224514289. The cubic root of 162022921 is about 545.1618866502.

The spelling of 162022921 in words is "one hundred sixty-two million, twenty-two thousand, nine hundred twenty-one".