1225333111 has 4 divisors (see below), whose sum is σ = 1237465224. Its totient is φ = 1213201000.

The previous prime is 1225333079. The next prime is 1225333121. The reversal of 1225333111 is 1113335221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1113335221 = 101 ⋅11023121.

It is a cyclic number.

It is not a de Polignac number, because 1225333111 - 2⁵ = 1225333079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1225333121) 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, 6065905 + ... + 6066106.

It is an arithmetic number, because the mean of its divisors is an integer number (309366306).

Almost surely, 2^1225333111 is an apocalyptic number.

1225333111 is a deficient number, since it is larger than the sum of its proper divisors (12132113).

1225333111 is a wasteful number, since it uses less digits than its factorization.

1225333111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12132112.

The product of its digits is 540, while the sum is 22.

The square root of 1225333111 is about 35004.7584051083. The cubic root of 1225333111 is about 1070.0844580609.

Adding to 1225333111 its reverse (1113335221), we get a palindrome (2338668332).

The spelling of 1225333111 in words is "one billion, two hundred twenty-five million, three hundred thirty-three thousand, one hundred eleven".