1200312133311 has 32 divisors (see below), whose sum is σ = 1678971064320. Its totient is φ = 761312217600.

The previous prime is 1200312133297. The next prime is 1200312133369. The reversal of 1200312133311 is 1133312130021.

It is a happy number.

It is not a de Polignac number, because 1200312133311 - 2³¹ = 1198164649663 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200312933311) 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, 13741906 + ... + 13828976.

It is an arithmetic number, because the mean of its divisors is an integer number (52467845760).

Almost surely, 2^{1200312133311} is an apocalyptic number.

1200312133311 is a deficient number, since it is larger than the sum of its proper divisors (478658931009).

1200312133311 is a wasteful number, since it uses less digits than its factorization.

1200312133311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88167.

The product of its (nonzero) digits is 324, while the sum is 21.

Adding to 1200312133311 its reverse (1133312130021), we get a palindrome (2333624263332).

The spelling of 1200312133311 in words is "one trillion, two hundred billion, three hundred twelve million, one hundred thirty-three thousand, three hundred eleven".