1201223232311 has 32 divisors (see below), whose sum is σ = 1299469989888. Its totient is φ = 1107661040640.

The previous prime is 1201223232289. The next prime is 1201223232323. The reversal of 1201223232311 is 1132323221021.

It is not a de Polignac number, because 1201223232311 - 2³⁰ = 1200149490487 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1201223232371) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22097681 + ... + 22151973.

It is an arithmetic number, because the mean of its divisors is an integer number (40608437184).

Almost surely, 2^{1201223232311} is an apocalyptic number.

1201223232311 is a deficient number, since it is larger than the sum of its proper divisors (98246757577).

1201223232311 is a wasteful number, since it uses less digits than its factorization.

1201223232311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54671.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 1201223232311 its reverse (1132323221021), we get a palindrome (2333546453332).

The spelling of 1201223232311 in words is "one trillion, two hundred one billion, two hundred twenty-three million, two hundred thirty-two thousand, three hundred eleven".