22112210211212 has 12 divisors (see below), whose sum is σ = 42214219494216. Its totient is φ = 10051004641440.

The previous prime is 22112210211211. The next prime is 22112210211233. The reversal of 22112210211212 is 21211201221122.

It is not an unprimeable number, because it can be changed into a prime (22112210211211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 251275115993 + ... + 251275116080.

It is an arithmetic number, because the mean of its divisors is an integer number (3517851624518).

Almost surely, 2^{22112210211212} is an apocalyptic number.

22112210211212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22112210211212 is a deficient number, since it is larger than the sum of its proper divisors (20102009283004).

22112210211212 is a wasteful number, since it uses less digits than its factorization.

22112210211212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502550232088 (or 502550232086 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 22112210211212 its reverse (21211201221122), we get a palindrome (43323411432334).

The spelling of 22112210211212 in words is "twenty-two trillion, one hundred twelve billion, two hundred ten million, two hundred eleven thousand, two hundred twelve".