162201220 has 48 divisors (see below), whose sum is σ = 347155200. Its totient is φ = 63648000.

The previous prime is 162201197. The next prime is 162201223. The reversal of 162201220 is 22102261.

It is a junction number, because it is equal to n+sod(n) for n = 162201194 and 162201203.

It is not an unprimeable number, because it can be changed into a prime (162201223) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 396376 + ... + 396784.

It is an arithmetic number, because the mean of its divisors is an integer number (7232400).

Almost surely, 2^162201220 is an apocalyptic number.

162201220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

162201220 is an abundant number, since it is smaller than the sum of its proper divisors (184953980).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

162201220 is a wasteful number, since it uses less digits than its factorization.

162201220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 748 (or 746 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 162201220 is about 12735.8242764259. The cubic root of 162201220 is about 545.3617887896.

Adding to 162201220 its reverse (22102261), we get a palindrome (184303481).

The spelling of 162201220 in words is "one hundred sixty-two million, two hundred one thousand, two hundred twenty".