22081712 has 20 divisors (see below), whose sum is σ = 42875976. Its totient is φ = 11016960.

The previous prime is 22081693. The next prime is 22081721. The reversal of 22081712 is 21718022.

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, 7928 + ... + 10344.

Almost surely, 2^22081712 is an apocalyptic number.

It is an amenable number.

22081712 is a deficient number, since it is larger than the sum of its proper divisors (20794264).

22081712 is a wasteful number, since it uses less digits than its factorization.

22081712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2996 (or 2990 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 23.

The square root of 22081712 is about 4699.1182151548. The cubic root of 22081712 is about 280.5504139059.

Adding to 22081712 its reverse (21718022), we get a palindrome (43799734).

The spelling of 22081712 in words is "twenty-two million, eighty-one thousand, seven hundred twelve".