11311202121200 has 60 divisors (see below), whose sum is σ = 27250860275280. Its totient is φ = 4511877780480.

The previous prime is 11311202121173. The next prime is 11311202121217. The reversal of 11311202121200 is 212120211311.

It is a happy number.

It is a congruent number.

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, 39240809 + ... + 39528008.

It is an arithmetic number, because the mean of its divisors is an integer number (454181004588).

Almost surely, 2^{11311202121200} is an apocalyptic number.

11311202121200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11311202121200 is an abundant number, since it is smaller than the sum of its proper divisors (15939658154080).

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

11311202121200 is a wasteful number, since it uses less digits than its factorization.

11311202121200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78769194 (or 78769183 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 11311202121200 its reverse (212120211311), we get a palindrome (11523322332511).

The spelling of 11311202121200 in words is "eleven trillion, three hundred eleven billion, two hundred two million, one hundred twenty-one thousand, two hundred".