22221212111102 has 4 divisors (see below), whose sum is σ = 33331818166656. Its totient is φ = 11110606055550.

The previous prime is 22221212111093. The next prime is 22221212111141. The reversal of 22221212111102 is 20111121212222.

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, 5555303027774 + ... + 5555303027777.

It is an arithmetic number, because the mean of its divisors is an integer number (8332954541664).

Almost surely, 2^{22221212111102} is an apocalyptic number.

22221212111102 is a deficient number, since it is larger than the sum of its proper divisors (11110606055554).

22221212111102 is a wasteful number, since it uses less digits than its factorization.

22221212111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11110606055553.

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

Adding to 22221212111102 its reverse (20111121212222), we get a palindrome (42332333323324).

The spelling of 22221212111102 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twelve million, one hundred eleven thousand, one hundred two".