22144210 has 24 divisors (see below), whose sum is σ = 43814988. Its totient is φ = 8052000.

The previous prime is 22144189. The next prime is 22144219. The reversal of 22144210 is 1244122.

It can be written as a sum of positive squares in 2 ways, for example, as 18688329 + 3455881 = 4323^2 + 1859^2 .

It is not an unprimeable number, because it can be changed into a prime (22144219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7941 + ... + 10360.

Almost surely, 2^22144210 is an apocalyptic number.

22144210 is a deficient number, since it is larger than the sum of its proper divisors (21670778).

22144210 is a wasteful number, since it uses less digits than its factorization.

22144210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18330 (or 18319 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 22144210 is about 4705.7634874694. The cubic root of 22144210 is about 280.8148457531.

Adding to 22144210 its reverse (1244122), we get a palindrome (23388332).

It can be divided in two parts, 221 and 44210, that multiplied together give a triangular number (9770410 = T₄₄₂₀).

The spelling of 22144210 in words is "twenty-two million, one hundred forty-four thousand, two hundred ten".