111221223133 has 2 divisors, whose sum is σ = 111221223134. Its totient is φ = 111221223132.

The previous prime is 111221223131. The next prime is 111221223149. The reversal of 111221223133 is 331322122111.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 94432060804 + 16789162329 = 307298^2 + 129573^2 .

It is a cyclic number.

It is not a de Polignac number, because 111221223133 - 2¹ = 111221223131 is a prime.

Together with 111221223131, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (111221223131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 55610611566 + 55610611567.

It is an arithmetic number, because the mean of its divisors is an integer number (55610611567).

Almost surely, 2^111221223133 is an apocalyptic number.

It is an amenable number.

111221223133 is a deficient number, since it is larger than the sum of its proper divisors (1).

111221223133 is an equidigital number, since it uses as much as digits as its factorization.

111221223133 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 22.

Adding to 111221223133 its reverse (331322122111), we get a palindrome (442543345244).

The spelling of 111221223133 in words is "one hundred eleven billion, two hundred twenty-one million, two hundred twenty-three thousand, one hundred thirty-three".