1201312311200 has 72 divisors (see below), whose sum is σ = 2958657032268. Its totient is φ = 476272455680.

The previous prime is 1201312311191. The next prime is 1201312311257. The reversal of 1201312311200 is 21132131021.

It can be written as a sum of positive squares in 6 ways, for example, as 124922661136 + 1076389650064 = 353444^2 + 1037492^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6554027 + ... + 6734826.

Almost surely, 2^{1201312311200} is an apocalyptic number.

1201312311200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201312311200 is an abundant number, since it is smaller than the sum of its proper divisors (1757344721068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1201312311200 is a wasteful number, since it uses less digits than its factorization.

1201312311200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13288986 (or 13288973 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 1201312311200 its reverse (21132131021), we get a palindrome (1222444442221).

The spelling of 1201312311200 in words is "one trillion, two hundred one billion, three hundred twelve million, three hundred eleven thousand, two hundred".