22220010 has 24 divisors (see below), whose sum is σ = 57772260. Its totient is φ = 5925312.

The previous prime is 22219999. The next prime is 22220027. The reversal of 22220010 is 1002222.

It can be written as a sum of positive squares in 2 ways, for example, as 21986721 + 233289 = 4689^2 + 483^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 22219974 and 22220001.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 123355 + ... + 123534.

Almost surely, 2^22220010 is an apocalyptic number.

22220010 is an abundant number, since it is smaller than the sum of its proper divisors (35552250).

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

22220010 is a wasteful number, since it uses less digits than its factorization.

22220010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246902 (or 246899 counting only the distinct ones).

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

The square root of 22220010 is about 4713.8105604702. The cubic root of 22220010 is about 281.1348921552.

Adding to 22220010 its reverse (1002222), we get a palindrome (23222232).

The spelling of 22220010 in words is "twenty-two million, two hundred twenty thousand, ten".