1111212223 has 8 divisors (see below), whose sum is σ = 1212543360. Its totient is φ = 1009933080.

The previous prime is 1111212203. The next prime is 1111212331. The reversal of 1111212223 is 3222121111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111212223 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1111212197 and 1111212206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1111212203) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41736 + ... + 62962.

It is an arithmetic number, because the mean of its divisors is an integer number (151567920).

Almost surely, 2^1111212223 is an apocalyptic number.

1111212223 is a deficient number, since it is larger than the sum of its proper divisors (101331137).

1111212223 is a wasteful number, since it uses less digits than its factorization.

1111212223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25997.

The product of its digits is 48, while the sum is 16.

The square root of 1111212223 is about 33334.8499771635. The cubic root of 1111212223 is about 1035.7755855131.

Adding to 1111212223 its reverse (3222121111), we get a palindrome (4333333334).

The spelling of 1111212223 in words is "one billion, one hundred eleven million, two hundred twelve thousand, two hundred twenty-three".