22222110221212 has 12 divisors (see below), whose sum is σ = 42424028604216. Its totient is φ = 10100959191440.

The previous prime is 22222110221209. The next prime is 22222110221221. The reversal of 22222110221212 is 21212201122222.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252523979743 + ... + 252523979830.

It is an arithmetic number, because the mean of its divisors is an integer number (3535335717018).

Almost surely, 2^{22222110221212} is an apocalyptic number.

22222110221212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22222110221212 is a deficient number, since it is larger than the sum of its proper divisors (20201918383004).

22222110221212 is a wasteful number, since it uses less digits than its factorization.

22222110221212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505047959588 (or 505047959586 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 22222110221212 its reverse (21212201122222), we get a palindrome (43434311343434).

The spelling of 22222110221212 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred ten million, two hundred twenty-one thousand, two hundred twelve".