1121022300 has 144 divisors (see below), whose sum is σ = 3476777472. Its totient is φ = 278150400.

The previous prime is 1121022281. The next prime is 1121022389. The reversal of 1121022300 is 32201211.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 253105 + ... + 257495.

It is an arithmetic number, because the mean of its divisors is an integer number (24144288).

Almost surely, 2^1121022300 is an apocalyptic number.

1121022300 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 1121022300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1738388736).

1121022300 is an abundant number, since it is smaller than the sum of its proper divisors (2355755172).

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

1121022300 is a wasteful number, since it uses less digits than its factorization.

1121022300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4468 (or 4461 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1121022300 is about 33481.6711052480. The cubic root of 1121022300 is about 1038.8146937310.

Adding to 1121022300 its reverse (32201211), we get a palindrome (1153223511).

The spelling of 1121022300 in words is "one billion, one hundred twenty-one million, twenty-two thousand, three hundred".