1131030221400 has 192 divisors, whose sum is σ = 3912787140000. Its totient is φ = 300290664960.

The previous prime is 1131030221383. The next prime is 1131030221441. The reversal of 1131030221400 is 41220301311.

1131030221400 is a `hidden beast` number, since 1 + 1 + 3 + 10 + 30 + 221 + 400 = 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 47 ways as a sum of consecutive naturals, for example, 779286 + ... + 1693914.

Almost surely, 2^{1131030221400} is an apocalyptic number.

1131030221400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1131030221400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1956393570000).

1131030221400 is an abundant number, since it is smaller than the sum of its proper divisors (2781756918600).

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

1131030221400 is a wasteful number, since it uses less digits than its factorization.

1131030221400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 914883 (or 914868 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1131030221400 its reverse (41220301311), we get a palindrome (1172250522711).

The spelling of 1131030221400 in words is "one trillion, one hundred thirty-one billion, thirty million, two hundred twenty-one thousand, four hundred".