22051612 has 12 divisors (see below), whose sum is σ = 42098616. Its totient is φ = 10023440.

The previous prime is 22051607. The next prime is 22051637. The reversal of 22051612 is 21615022.

It is a self number, because there is not a number n which added to its sum of digits gives 22051612.

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, 250543 + ... + 250630.

It is an arithmetic number, because the mean of its divisors is an integer number (3508218).

Almost surely, 2^22051612 is an apocalyptic number.

22051612 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22051612 is a deficient number, since it is larger than the sum of its proper divisors (20047004).

22051612 is a wasteful number, since it uses less digits than its factorization.

22051612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 501188 (or 501186 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 22051612 is about 4695.9143944497. The cubic root of 22051612 is about 280.4228814127.

Adding to 22051612 its reverse (21615022), we get a palindrome (43666634).

The spelling of 22051612 in words is "twenty-two million, fifty-one thousand, six hundred twelve".