1111213233 has 36 divisors (see below), whose sum is σ = 1824388020. Its totient is φ = 647808192.

The previous prime is 1111213231. The next prime is 1111213241. The reversal of 1111213233 is 3323121111.

It can be written as a sum of positive squares in 2 ways, for example, as 124813584 + 986399649 = 11172^2 + 31407^2 .

It is not a de Polignac number, because 1111213233 - 2¹ = 1111213231 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1111213231) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 29083 + ... + 55391.

It is an arithmetic number, because the mean of its divisors is an integer number (50677445).

Almost surely, 2^1111213233 is an apocalyptic number.

1111213233 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1111213233 is a deficient number, since it is larger than the sum of its proper divisors (713174787).

1111213233 is a wasteful number, since it uses less digits than its factorization.

1111213233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26366 (or 26344 counting only the distinct ones).

The product of its digits is 108, while the sum is 18.

The square root of 1111213233 is about 33334.8651264708. The cubic root of 1111213233 is about 1035.7758993245.

Adding to 1111213233 its reverse (3323121111), we get a palindrome (4434334344).

The spelling of 1111213233 in words is "one billion, one hundred eleven million, two hundred thirteen thousand, two hundred thirty-three".