1110121400 has 48 divisors (see below), whose sum is σ = 2604762600. Its totient is φ = 439966080.

The previous prime is 1110121387. The next prime is 1110121457. The reversal of 1110121400 is 41210111.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3662 + ... + 47261.

Almost surely, 2^1110121400 is an apocalyptic number.

1110121400 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 1110121400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1302381300).

1110121400 is an abundant number, since it is smaller than the sum of its proper divisors (1494641200).

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

1110121400 is a wasteful number, since it uses less digits than its factorization.

1110121400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51048 (or 51039 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 11.

The square root of 1110121400 is about 33318.4843592862. The cubic root of 1110121400 is about 1035.4365510438.

Adding to 1110121400 its reverse (41210111), we get a palindrome (1151331511).

The spelling of 1110121400 in words is "one billion, one hundred ten million, one hundred twenty-one thousand, four hundred".