22120311212 has 6 divisors (see below), whose sum is σ = 38710544628. Its totient is φ = 11060155604.

The previous prime is 22120311197. The next prime is 22120311221. The reversal of 22120311212 is 21211302122.

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 as a sum of consecutive naturals, namely, 2765038898 + ... + 2765038905.

It is an arithmetic number, because the mean of its divisors is an integer number (6451757438).

Almost surely, 2^22120311212 is an apocalyptic number.

It is an amenable number.

22120311212 is a deficient number, since it is larger than the sum of its proper divisors (16590233416).

22120311212 is a wasteful number, since it uses less digits than its factorization.

22120311212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5530077807 (or 5530077805 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 22120311212 its reverse (21211302122), we get a palindrome (43331613334).

The spelling of 22120311212 in words is "twenty-two billion, one hundred twenty million, three hundred eleven thousand, two hundred twelve".