1121134021400 has 48 divisors (see below), whose sum is σ = 2613337646400. Its totient is φ = 447300740480.

The previous prime is 1121134021393. The next prime is 1121134021409. The reversal of 1121134021400 is 41204311211.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121134021409) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7127432 + ... + 7283031.

It is an arithmetic number, because the mean of its divisors is an integer number (54444534300).

Almost surely, 2^{1121134021400} is an apocalyptic number.

1121134021400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121134021400 is an abundant number, since it is smaller than the sum of its proper divisors (1492203625000).

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

1121134021400 is a wasteful number, since it uses less digits than its factorization.

1121134021400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14410868 (or 14410859 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 1121134021400 its reverse (41204311211), we get a palindrome (1162338332611).

The spelling of 1121134021400 in words is "one trillion, one hundred twenty-one billion, one hundred thirty-four million, twenty-one thousand, four hundred".