1225310011 has 4 divisors (see below), whose sum is σ = 1225654632. Its totient is φ = 1224965392.

The previous prime is 1225309997. The next prime is 1225310017. The reversal of 1225310011 is 1100135221.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1225310011 - 2⁵ = 1225309979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1225310017) 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, 166921 + ... + 174106.

It is an arithmetic number, because the mean of its divisors is an integer number (306413658).

Almost surely, 2^1225310011 is an apocalyptic number.

1225310011 is a deficient number, since it is larger than the sum of its proper divisors (344621).

1225310011 is an equidigital number, since it uses as much as digits as its factorization.

1225310011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344620.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 1225310011 is about 35004.4284484121. The cubic root of 1225310011 is about 1070.0777336021.

Adding to 1225310011 its reverse (1100135221), we get a palindrome (2325445232).

The spelling of 1225310011 in words is "one billion, two hundred twenty-five million, three hundred ten thousand, eleven".