22102012 has 12 divisors (see below), whose sum is σ = 38736040. Its totient is φ = 11034576.

The previous prime is 22101979. The next prime is 22102013. The reversal of 22102012 is 21020122.

It is a self number, because there is not a number n which added to its sum of digits gives 22102012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22102013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 783 + ... + 6694.

Almost surely, 2^22102012 is an apocalyptic number.

It is an amenable number.

22102012 is a deficient number, since it is larger than the sum of its proper divisors (16634028).

22102012 is a wasteful number, since it uses less digits than its factorization.

22102012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8220 (or 8218 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 22102012 is about 4701.2776986687. The cubic root of 22102012 is about 280.6363587679.

Adding to 22102012 its reverse (21020122), we get a palindrome (43122134).

It can be divided in two parts, 2 and 2102012, that multiplied together give a palindrome (4204024).

The spelling of 22102012 in words is "twenty-two million, one hundred two thousand, twelve".