1200312122231 has 4 divisors (see below), whose sum is σ = 1209763398912. Its totient is φ = 1190860845552.

The previous prime is 1200312122227. The next prime is 1200312122239. The reversal of 1200312122231 is 1322212130021.

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 1200312122231 - 2² = 1200312122227 is a prime.

It is a super-2 number, since 2×1200312122231² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200312122239) 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, 4725638150 + ... + 4725638403.

It is an arithmetic number, because the mean of its divisors is an integer number (302440849728).

Almost surely, 2^{1200312122231} is an apocalyptic number.

1200312122231 is a deficient number, since it is larger than the sum of its proper divisors (9451276681).

1200312122231 is an equidigital number, since it uses as much as digits as its factorization.

1200312122231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9451276680.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1200312122231 its reverse (1322212130021), we get a palindrome (2522524252252).

The spelling of 1200312122231 in words is "one trillion, two hundred billion, three hundred twelve million, one hundred twenty-two thousand, two hundred thirty-one".