1131212122200 has 144 divisors (see below), whose sum is σ = 3901662941280. Its totient is φ = 293503668480.

The previous prime is 1131212122199. The next prime is 1131212122219. The reversal of 1131212122200 is 22212121311.

1131212122200 is a `hidden beast` number, since 1 + 131 + 212 + 122 + 200 = 666.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8425984 + ... + 8559183.

Almost surely, 2^{1131212122200} is an apocalyptic number.

1131212122200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1131212122200 is an abundant number, since it is smaller than the sum of its proper divisors (2770450819080).

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

1131212122200 is a wasteful number, since it uses less digits than its factorization.

1131212122200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16985226 (or 16985214 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 1131212122200 its reverse (22212121311), we get a palindrome (1153424243511).

The spelling of 1131212122200 in words is "one trillion, one hundred thirty-one billion, two hundred twelve million, one hundred twenty-two thousand, two hundred".