22121211100222 has 24 divisors (see below), whose sum is σ = 35960228136504. Its totient is φ = 10201372575264.

The previous prime is 22121211100213. The next prime is 22121211100223. The reversal of 22121211100222 is 22200111212122.

It is a self number, because there is not a number n which added to its sum of digits gives 22121211100222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22121211100223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 26567488 + ... + 27387475.

It is an arithmetic number, because the mean of its divisors is an integer number (1498342839021).

Almost surely, 2^{22121211100222} is an apocalyptic number.

22121211100222 is a deficient number, since it is larger than the sum of its proper divisors (13839017036282).

22121211100222 is a wasteful number, since it uses less digits than its factorization.

22121211100222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53956204 (or 53956191 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 22121211100222 its reverse (22200111212122), we get a palindrome (44321322312344).

The spelling of 22121211100222 in words is "twenty-two trillion, one hundred twenty-one billion, two hundred eleven million, one hundred thousand, two hundred twenty-two".