22222121210111 has 16 divisors (see below), whose sum is σ = 23094746492928. Its totient is φ = 21359682439200.

The previous prime is 22222121210027. The next prime is 22222121210117. The reversal of 22222121210111 is 11101212122222.

It is a cyclic number.

It is not a de Polignac number, because 22222121210111 - 2¹⁸ = 22222120947967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22222121210117) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 787895 + ... + 6713048.

It is an arithmetic number, because the mean of its divisors is an integer number (1443421655808).

Almost surely, 2^{22222121210111} is an apocalyptic number.

22222121210111 is a deficient number, since it is larger than the sum of its proper divisors (872625282817).

22222121210111 is a wasteful number, since it uses less digits than its factorization.

22222121210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7501622.

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

Adding to 22222121210111 its reverse (11101212122222), we get a palindrome (33323333332333).

The spelling of 22222121210111 in words is "twenty-two trillion, two hundred twenty-two billion, one hundred twenty-one million, two hundred ten thousand, one hundred eleven".