22112201212 has 6 divisors (see below), whose sum is σ = 38696352128. Its totient is φ = 11056100604.

The previous prime is 22112201201. The next prime is 22112201227. The reversal of 22112201212 is 21210221122.

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, 2764025148 + ... + 2764025155.

Almost surely, 2^22112201212 is an apocalyptic number.

It is an amenable number.

22112201212 is a deficient number, since it is larger than the sum of its proper divisors (16584150916).

22112201212 is a wasteful number, since it uses less digits than its factorization.

22112201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5528050307 (or 5528050305 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 22112201212 its reverse (21210221122), we get a palindrome (43322422334).

The spelling of 22112201212 in words is "twenty-two billion, one hundred twelve million, two hundred one thousand, two hundred twelve".