162226336421 has 4 divisors (see below), whose sum is σ = 162227317644. Its totient is φ = 162225355200.

The previous prime is 162226336397. The next prime is 162226336439. The reversal of 162226336421 is 124633622261.

162226336421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 124633622261 = 25373 ⋅4912057.

It can be written as a sum of positive squares in 2 ways, for example, as 98697133921 + 63529202500 = 314161^2 + 252050^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-162226336421 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (162226336021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 174890 + ... + 595851.

It is an arithmetic number, because the mean of its divisors is an integer number (40556829411).

Almost surely, 2^162226336421 is an apocalyptic number.

It is an amenable number.

162226336421 is a deficient number, since it is larger than the sum of its proper divisors (981223).

162226336421 is an equidigital number, since it uses as much as digits as its factorization.

162226336421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981222.

The product of its digits is 124416, while the sum is 38.

Adding to 162226336421 its reverse (124633622261), we get a palindrome (286859958682).

The spelling of 162226336421 in words is "one hundred sixty-two billion, two hundred twenty-six million, three hundred thirty-six thousand, four hundred twenty-one".