202189122 has 96 divisors (see below), whose sum is σ = 475151040. Its totient is φ = 64385280.

The previous prime is 202189111. The next prime is 202189123. The reversal of 202189122 is 221981202.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (202189123) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1454529 + ... + 1454667.

It is an arithmetic number, because the mean of its divisors is an integer number (4949490).

Almost surely, 2^202189122 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 202189122, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (237575520).

202189122 is an abundant number, since it is smaller than the sum of its proper divisors (272961918).

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

202189122 is a wasteful number, since it uses less digits than its factorization.

202189122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 258 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 202189122 is about 14219.3221357419. The cubic root of 202189122 is about 586.9294870254.

The spelling of 202189122 in words is "two hundred two million, one hundred eighty-nine thousand, one hundred twenty-two".