22131112111 has 2 divisors, whose sum is σ = 22131112112. Its totient is φ = 22131112110.

The previous prime is 22131112099. The next prime is 22131112121. The reversal of 22131112111 is 11121113122.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22131112111 - 2¹⁹ = 22130587823 is a prime.

It is a super-2 number, since 2×22131112111² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22131112121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11065556055 + 11065556056.

It is an arithmetic number, because the mean of its divisors is an integer number (11065556056).

Almost surely, 2^22131112111 is an apocalyptic number.

22131112111 is a deficient number, since it is larger than the sum of its proper divisors (1).

22131112111 is an equidigital number, since it uses as much as digits as its factorization.

22131112111 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24, while the sum is 16.

Adding to 22131112111 its reverse (11121113122), we get a palindrome (33252225233).

The spelling of 22131112111 in words is "twenty-two billion, one hundred thirty-one million, one hundred twelve thousand, one hundred eleven".