1223345011 has 4 divisors (see below), whose sum is σ = 1398108592. Its totient is φ = 1048581432.

The previous prime is 1223345009. The next prime is 1223345029. The reversal of 1223345011 is 1105433221.

It is a happy number.

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 1223345011 - 2¹ = 1223345009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223345411) 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, 87381780 + ... + 87381793.

It is an arithmetic number, because the mean of its divisors is an integer number (349527148).

Almost surely, 2^1223345011 is an apocalyptic number.

1223345011 is a deficient number, since it is larger than the sum of its proper divisors (174763581).

1223345011 is an equidigital number, since it uses as much as digits as its factorization.

1223345011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174763580.

The product of its (nonzero) digits is 720, while the sum is 22.

The square root of 1223345011 is about 34976.3493092118. The cubic root of 1223345011 is about 1069.5054082999.

Adding to 1223345011 its reverse (1105433221), we get a palindrome (2328778232).

The spelling of 1223345011 in words is "one billion, two hundred twenty-three million, three hundred forty-five thousand, eleven".