1113221131200 has 252 divisors, whose sum is σ = 4063589195640. Its totient is φ = 288835614720.

The previous prime is 1113221131157. The next prime is 1113221131213. The reversal of 1113221131200 is 21311223111.

1113221131200 is a `hidden beast` number, since 1 + 11 + 322 + 1 + 131 + 200 = 666.

It is a super-2 number, since 2×1113221131200² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 511890 + ... + 1577489.

Almost surely, 2^{1113221131200} is an apocalyptic number.

1113221131200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1113221131200 is an abundant number, since it is smaller than the sum of its proper divisors (2950368064440).

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

1113221131200 is a wasteful number, since it uses less digits than its factorization.

1113221131200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2089444 (or 2089426 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 1113221131200 its reverse (21311223111), we get a palindrome (1134532354311).

It can be divided in two parts, 1113221 and 131200, that added together give a palindrome (1244421).

The spelling of 1113221131200 in words is "one trillion, one hundred thirteen billion, two hundred twenty-one million, one hundred thirty-one thousand, two hundred".