22222210 has 16 divisors (see below), whose sum is σ = 42105600. Its totient is φ = 8420976.

The previous prime is 22222199. The next prime is 22222223. The reversal of 22222210 is 1222222.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58290 + ... + 58669.

It is an arithmetic number, because the mean of its divisors is an integer number (2631600).

Almost surely, 2^22222210 is an apocalyptic number.

22222210 is a deficient number, since it is larger than the sum of its proper divisors (19883390).

22222210 is a wasteful number, since it uses less digits than its factorization.

22222210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116985.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 22222210 is about 4714.0439115477. The cubic root of 22222210 is about 281.1441702241.

Adding to 22222210 its reverse (1222222), we get a palindrome (23444432).

The spelling of 22222210 in words is "twenty-two million, two hundred twenty-two thousand, two hundred ten".