22012412 has 12 divisors (see below), whose sum is σ = 40549320. Its totient is φ = 10426896.

The previous prime is 22012411. The next prime is 22012427. The reversal of 22012412 is 21421022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22012411) 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, 144743 + ... + 144894.

It is an arithmetic number, because the mean of its divisors is an integer number (3379110).

Almost surely, 2^22012412 is an apocalyptic number.

It is an amenable number.

22012412 is a deficient number, since it is larger than the sum of its proper divisors (18536908).

22012412 is a wasteful number, since it uses less digits than its factorization.

22012412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289660 (or 289658 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

The square root of 22012412 is about 4691.7386969012. The cubic root of 22012412 is about 280.2566184802.

Adding to 22012412 its reverse (21421022), we get a palindrome (43433434).

The spelling of 22012412 in words is "twenty-two million, twelve thousand, four hundred twelve".