1200123301311 has 72 divisors (see below), whose sum is σ = 1985997232128. Its totient is φ = 697048783200.

The previous prime is 1200123301309. The next prime is 1200123301327. The reversal of 1200123301311 is 1131033210021.

1200123301311 is a `hidden beast` number, since 1 + 20 + 0 + 1 + 2 + 330 + 1 + 311 = 666.

It is not a de Polignac number, because 1200123301311 - 2¹ = 1200123301309 is a prime.

It is a super-2 number, since 2×1200123301311² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1200123301361) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 3304606 + ... + 3649748.

Almost surely, 2^{1200123301311} is an apocalyptic number.

1200123301311 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1200123301311 is a deficient number, since it is larger than the sum of its proper divisors (785873930817).

1200123301311 is a wasteful number, since it uses less digits than its factorization.

1200123301311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345305 (or 345291 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1200123301311 its reverse (1131033210021), we get a palindrome (2331156511332).

The spelling of 1200123301311 in words is "one trillion, two hundred billion, one hundred twenty-three million, three hundred one thousand, three hundred eleven".