22211143212 has 24 divisors (see below), whose sum is σ = 54874589616. Its totient is φ = 6968201728.

The previous prime is 22211143189. The next prime is 22211143249. The reversal of 22211143212 is 21234111222.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54438873 + ... + 54439280.

It is an arithmetic number, because the mean of its divisors is an integer number (2286441234).

Almost surely, 2^22211143212 is an apocalyptic number.

It is an amenable number.

22211143212 is an abundant number, since it is smaller than the sum of its proper divisors (32663446404).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

22211143212 is a wasteful number, since it uses less digits than its factorization.

22211143212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108878177 (or 108878175 counting only the distinct ones).

The product of its digits is 384, while the sum is 21.

Adding to 22211143212 its reverse (21234111222), we get a palindrome (43445254434).

The spelling of 22211143212 in words is "twenty-two billion, two hundred eleven million, one hundred forty-three thousand, two hundred twelve".