1223012303011 has 4 divisors (see below), whose sum is σ = 1276186750992. Its totient is φ = 1169837855032.

The previous prime is 1223012302991. The next prime is 1223012303017. The reversal of 1223012303011 is 1103032103221.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1223012303011 is a prime.

It is a super-2 number, since 2×1223012303011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1223012303011.

It is not an unprimeable number, because it can be changed into a prime (1223012303017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26587223956 + ... + 26587224001.

It is an arithmetic number, because the mean of its divisors is an integer number (319046687748).

Almost surely, 2^{1223012303011} is an apocalyptic number.

1223012303011 is a deficient number, since it is larger than the sum of its proper divisors (53174447981).

1223012303011 is an equidigital number, since it uses as much as digits as its factorization.

1223012303011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53174447980.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 1223012303011 its reverse (1103032103221), we get a palindrome (2326044406232).

The spelling of 1223012303011 in words is "one trillion, two hundred twenty-three billion, twelve million, three hundred three thousand, eleven".