162226621 has 2 divisors, whose sum is σ = 162226622. Its totient is φ = 162226620.

The previous prime is 162226607. The next prime is 162226651. The reversal of 162226621 is 126622261.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 83265625 + 78960996 = 9125^2 + 8886^2 .

It is a cyclic number.

It is not a de Polignac number, because 162226621 - 2⁹ = 162226109 is a prime.

It is a super-2 number, since 2×162226621² = 52634953122155282, 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 162226621.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (162226651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 81113310 + 81113311.

It is an arithmetic number, because the mean of its divisors is an integer number (81113311).

Almost surely, 2^162226621 is an apocalyptic number.

It is an amenable number.

162226621 is a deficient number, since it is larger than the sum of its proper divisors (1).

162226621 is an equidigital number, since it uses as much as digits as its factorization.

162226621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 28.

The square root of 162226621 is about 12736.8214637719. The cubic root of 162226621 is about 545.3902555128.

Adding to 162226621 its reverse (126622261), we get a palindrome (288848882).

The spelling of 162226621 in words is "one hundred sixty-two million, two hundred twenty-six thousand, six hundred twenty-one".