1111221312233 has 4 divisors (see below), whose sum is σ = 1111330662288. Its totient is φ = 1111111962180.

The previous prime is 1111221312193. The next prime is 1111221312251. The reversal of 1111221312233 is 3322131221111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1111221312233 - 2¹⁸ = 1111221050089 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111221312199 and 1111221312208.

It is not an unprimeable number, because it can be changed into a prime (1111221312433) 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, 54659783 + ... + 54680108.

It is an arithmetic number, because the mean of its divisors is an integer number (277832665572).

Almost surely, 2^{1111221312233} is an apocalyptic number.

It is an amenable number.

1111221312233 is a deficient number, since it is larger than the sum of its proper divisors (109350055).

1111221312233 is a wasteful number, since it uses less digits than its factorization.

1111221312233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109350054.

The product of its digits is 432, while the sum is 23.

Adding to 1111221312233 its reverse (3322131221111), we get a palindrome (4433352533344).

The spelling of 1111221312233 in words is "one trillion, one hundred eleven billion, two hundred twenty-one million, three hundred twelve thousand, two hundred thirty-three".