22220004402 has 20 divisors (see below), whose sum is σ = 49789269486. Its totient is φ = 7406668080.

The previous prime is 22220004353. The next prime is 22220004409. The reversal of 22220004402 is 20440002222.

22220004402 is a `hidden beast` number, since 2 + 2 + 220 + 0 + 0 + 440 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17505671481 + 4714332921 = 132309^2 + 68661^2 .

It is a super-3 number, since 3×22220004402³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22220004409) 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, 68580099 + ... + 68580422.

Almost surely, 2^22220004402 is an apocalyptic number.

22220004402 is an abundant number, since it is smaller than the sum of its proper divisors (27569265084).

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

22220004402 is a wasteful number, since it uses less digits than its factorization.

22220004402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137160535 (or 137160526 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 18.

Adding to 22220004402 its reverse (20440002222), we get a palindrome (42660006624).

The spelling of 22220004402 in words is "twenty-two billion, two hundred twenty million, four thousand, four hundred two".