22100111212222 has 4 divisors (see below), whose sum is σ = 33150166818336. Its totient is φ = 11050055606110.

The previous prime is 22100111212219. The next prime is 22100111212237. The reversal of 22100111212222 is 22221211100122.

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

It is a self number, because there is not a number n which added to its sum of digits gives 22100111212222.

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, 5525027803054 + ... + 5525027803057.

It is an arithmetic number, because the mean of its divisors is an integer number (8287541704584).

Almost surely, 2^{22100111212222} is an apocalyptic number.

22100111212222 is a deficient number, since it is larger than the sum of its proper divisors (11050055606114).

22100111212222 is a wasteful number, since it uses less digits than its factorization.

22100111212222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11050055606113.

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

Adding to 22100111212222 its reverse (22221211100122), we get a palindrome (44321322312344).

The spelling of 22100111212222 in words is "twenty-two trillion, one hundred billion, one hundred eleven million, two hundred twelve thousand, two hundred twenty-two".