22021212112111 has 2 divisors, whose sum is σ = 22021212112112. Its totient is φ = 22021212112110.

The previous prime is 22021212112073. The next prime is 22021212112129. The reversal of 22021212112111 is 11121121212022.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22021212112111 - 2³³ = 22012622177519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22021212512111) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11010606056055 + 11010606056056.

It is an arithmetic number, because the mean of its divisors is an integer number (11010606056056).

Almost surely, 2^{22021212112111} is an apocalyptic number.

22021212112111 is a deficient number, since it is larger than the sum of its proper divisors (1).

22021212112111 is an equidigital number, since it uses as much as digits as its factorization.

22021212112111 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 22021212112111 its reverse (11121121212022), we get a palindrome (33142333324133).

The spelling of 22021212112111 in words is "twenty-two trillion, twenty-one billion, two hundred twelve million, one hundred twelve thousand, one hundred eleven".