12222102221222 has 4 divisors (see below), whose sum is σ = 18333153331836. Its totient is φ = 6111051110610.

The previous prime is 12222102221191. The next prime is 12222102221237. The reversal of 12222102221222 is 22212220122221.

It is a semiprime because it is the product of two primes.

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, 3055525555304 + ... + 3055525555307.

It is an arithmetic number, because the mean of its divisors is an integer number (4583288332959).

Almost surely, 2^{12222102221222} is an apocalyptic number.

12222102221222 is a deficient number, since it is larger than the sum of its proper divisors (6111051110614).

12222102221222 is an equidigital number, since it uses as much as digits as its factorization.

12222102221222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6111051110613.

The product of its (nonzero) digits is 1024, while the sum is 23.

Adding to 12222102221222 its reverse (22212220122221), we get a palindrome (34434322343443).

The spelling of 12222102221222 in words is "twelve trillion, two hundred twenty-two billion, one hundred two million, two hundred twenty-one thousand, two hundred twenty-two".