1201031131200 has 168 divisors, whose sum is σ = 4147771861920. Its totient is φ = 303418368000.

The previous prime is 1201031131199. The next prime is 1201031131211. The reversal of 1201031131200 is 21311301021.

It is a happy number.

It is a super-2 number, since 2×1201031131200² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1201031131200.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6493401 + ... + 6675800.

Almost surely, 2^{1201031131200} is an apocalyptic number.

1201031131200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201031131200 is an abundant number, since it is smaller than the sum of its proper divisors (2946740730720).

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

1201031131200 is a wasteful number, since it uses less digits than its factorization.

1201031131200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13169245 (or 13169230 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 1201031131200 its reverse (21311301021), we get a palindrome (1222342432221).

The spelling of 1201031131200 in words is "one trillion, two hundred one billion, thirty-one million, one hundred thirty-one thousand, two hundred".