22180412 has 12 divisors (see below), whose sum is σ = 38862096. Its totient is φ = 11076960.

The previous prime is 22180399. The next prime is 22180421. The reversal of 22180412 is 21408122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1112 + ... + 6752.

It is an arithmetic number, because the mean of its divisors is an integer number (3238508).

Almost surely, 2^22180412 is an apocalyptic number.

It is an amenable number.

22180412 is a deficient number, since it is larger than the sum of its proper divisors (16681684).

22180412 is a wasteful number, since it uses less digits than its factorization.

22180412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6628 (or 6626 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

The square root of 22180412 is about 4709.6084762961. The cubic root of 22180412 is about 280.9677905357.

Adding to 22180412 its reverse (21408122), we get a palindrome (43588534).

The spelling of 22180412 in words is "twenty-two million, one hundred eighty thousand, four hundred twelve".