1223250443011 has 16 divisors (see below), whose sum is σ = 1289321719200. Its totient is φ = 1158866553600.

The previous prime is 1223250442963. The next prime is 1223250443053. The reversal of 1223250443011 is 1103440523221.

It is a cyclic number.

It is not a de Polignac number, because 1223250443011 - 2³⁹ = 673494629123 is a prime.

It is a super-2 number, since 2×1223250443011² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1223250843011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 121825 + ... + 1568866.

It is an arithmetic number, because the mean of its divisors is an integer number (80582607450).

Almost surely, 2^{1223250443011} is an apocalyptic number.

1223250443011 is a deficient number, since it is larger than the sum of its proper divisors (66071276189).

1223250443011 is a wasteful number, since it uses less digits than its factorization.

1223250443011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1691190.

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 1223250443011 its reverse (1103440523221), we get a palindrome (2326690966232).

The spelling of 1223250443011 in words is "one trillion, two hundred twenty-three billion, two hundred fifty million, four hundred forty-three thousand, eleven".