22221010 has 48 divisors (see below), whose sum is σ = 47093400. Its totient is φ = 7526400.

The previous prime is 22221007. The next prime is 22221029. The reversal of 22221010 is 1012222.

It can be written as a sum of positive squares in 4 ways, for example, as 21930489 + 290521 = 4683^2 + 539^2 .

It is a super-3 number, since 3×22221010³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49266 + ... + 49714.

Almost surely, 2^22221010 is an apocalyptic number.

22221010 is an abundant number, since it is smaller than the sum of its proper divisors (24872390).

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

22221010 is a wasteful number, since it uses less digits than its factorization.

22221010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571 (or 564 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 22221010 is about 4713.9166305738. The cubic root of 22221010 is about 281.1391095352.

Adding to 22221010 its reverse (1012222), we get a palindrome (23233232).

The spelling of 22221010 in words is "twenty-two million, two hundred twenty-one thousand, ten".