22221220111011 has 24 divisors (see below), whose sum is σ = 32587285835520. Its totient is φ = 14588493519600.

The previous prime is 22221220110959. The next prime is 22221220111037. The reversal of 22221220111011 is 11011102212222.

It is not a de Polignac number, because 22221220111011 - 2⁹ = 22221220110499 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22221220111511) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19692655 + ... + 20790456.

It is an arithmetic number, because the mean of its divisors is an integer number (1357803576480).

Almost surely, 2^{22221220111011} is an apocalyptic number.

22221220111011 is a deficient number, since it is larger than the sum of its proper divisors (10366065724509).

22221220111011 is a wasteful number, since it uses less digits than its factorization.

22221220111011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40484047 (or 40484044 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 22221220111011 its reverse (11011102212222), we get a palindrome (33232322323233).

The spelling of 22221220111011 in words is "twenty-two trillion, two hundred twenty-one billion, two hundred twenty million, one hundred eleven thousand, eleven".