1221112333 has 4 divisors (see below), whose sum is σ = 1395556960. Its totient is φ = 1046667708.

The previous prime is 1221112331. The next prime is 1221112379. The reversal of 1221112333 is 3332111221.

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 1221112333 - 2¹ = 1221112331 is a prime.

It is a super-2 number, since 2×1221112333² = 2982230659609405778, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1221112333.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1221112331) 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, 87222303 + ... + 87222316.

It is an arithmetic number, because the mean of its divisors is an integer number (348889240).

Almost surely, 2^1221112333 is an apocalyptic number.

It is an amenable number.

1221112333 is a deficient number, since it is larger than the sum of its proper divisors (174444627).

1221112333 is an equidigital number, since it uses as much as digits as its factorization.

1221112333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174444626.

The product of its digits is 216, while the sum is 19.

The square root of 1221112333 is about 34944.4177659322. The cubic root of 1221112333 is about 1068.8543749140.

Adding to 1221112333 its reverse (3332111221), we get a palindrome (4553223554).

The spelling of 1221112333 in words is "one billion, two hundred twenty-one million, one hundred twelve thousand, three hundred thirty-three".