22222111412 has 12 divisors (see below), whose sum is σ = 39086100900. Its totient is φ = 11054654016.

The previous prime is 22222111399. The next prime is 22222111481. The reversal of 22222111412 is 21411122222.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 19871413156 + 2350698256 = 140966^2 + 48484^2 .

It is a nude number because it is divisible by every one of its digits.

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, 14099537 + ... + 14101112.

It is an arithmetic number, because the mean of its divisors is an integer number (3257175075).

Almost surely, 2^22222111412 is an apocalyptic number.

It is an amenable number.

22222111412 is a deficient number, since it is larger than the sum of its proper divisors (16863989488).

22222111412 is a wasteful number, since it uses less digits than its factorization.

22222111412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28200850 (or 28200848 counting only the distinct ones).

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

Adding to 22222111412 its reverse (21411122222), we get a palindrome (43633233634).

The spelling of 22222111412 in words is "twenty-two billion, two hundred twenty-two million, one hundred eleven thousand, four hundred twelve".