111201222133 has 4 divisors (see below), whose sum is σ = 111815593708. Its totient is φ = 110586850560.

The previous prime is 111201222113. The next prime is 111201222199. The reversal of 111201222133 is 331222102111.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 331222102111 = 1601 ⋅206884511.

It can be written as a sum of positive squares in 2 ways, for example, as 12342543409 + 98858678724 = 111097^2 + 314418^2 .

It is a cyclic number.

It is not a de Polignac number, because 111201222133 - 2¹⁷ = 111201091061 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 111201222133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111201222113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 307185516 + ... + 307185877.

It is an arithmetic number, because the mean of its divisors is an integer number (27953898427).

Almost surely, 2^111201222133 is an apocalyptic number.

It is an amenable number.

111201222133 is a deficient number, since it is larger than the sum of its proper divisors (614371575).

111201222133 is an equidigital number, since it uses as much as digits as its factorization.

111201222133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 614371574.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 111201222133 its reverse (331222102111), we get a palindrome (442423324244).

The spelling of 111201222133 in words is "one hundred eleven billion, two hundred one million, two hundred twenty-two thousand, one hundred thirty-three".