22221212121110 has 32 divisors (see below), whose sum is σ = 40505018457600. Its totient is φ = 8775857432160.

The previous prime is 22221212121089. The next prime is 22221212121187. The reversal of 22221212121110 is 1112121212222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85198481 + ... + 85458899.

It is an arithmetic number, because the mean of its divisors is an integer number (1265781826800).

Almost surely, 2^{22221212121110} is an apocalyptic number.

22221212121110 is a deficient number, since it is larger than the sum of its proper divisors (18283806336490).

22221212121110 is a wasteful number, since it uses less digits than its factorization.

22221212121110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368516.

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

Adding to 22221212121110 its reverse (1112121212222), we get a palindrome (23333333333332).

The spelling of 22221212121110 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twelve million, one hundred twenty-one thousand, one hundred ten".