22100202 has 20 divisors (see below), whose sum is σ = 49521186. Its totient is φ = 7366680.

The previous prime is 22100191. The next prime is 22100203. The reversal of 22100202 is 20200122.

It can be written as a sum of positive squares in only one way, i.e., 21818241 + 281961 = 4671^2 + 531^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (22100203) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 68049 + ... + 68372.

Almost surely, 2^22100202 is an apocalyptic number.

22100202 is an abundant number, since it is smaller than the sum of its proper divisors (27420984).

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

22100202 is a wasteful number, since it uses less digits than its factorization.

22100202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136435 (or 136426 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 9.

The square root of 22100202 is about 4701.0851938675. The cubic root of 22100202 is about 280.6286978413.

Adding to 22100202 its reverse (20200122), we get a palindrome (42300324).

The spelling of 22100202 in words is "twenty-two million, one hundred thousand, two hundred two".