22122122012 has 6 divisors (see below), whose sum is σ = 38713713528. Its totient is φ = 11061061004.

The previous prime is 22122121951. The next prime is 22122122027. The reversal of 22122122012 is 21022122122.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2765265248 + ... + 2765265255.

It is an arithmetic number, because the mean of its divisors is an integer number (6452285588).

Almost surely, 2^22122122012 is an apocalyptic number.

It is an amenable number.

22122122012 is a deficient number, since it is larger than the sum of its proper divisors (16591591516).

22122122012 is a wasteful number, since it uses less digits than its factorization.

22122122012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5530530507 (or 5530530505 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 22122122012 its reverse (21022122122), we get a palindrome (43144244134).

The spelling of 22122122012 in words is "twenty-two billion, one hundred twenty-two million, one hundred twenty-two thousand, twelve".