1121224100 has 36 divisors (see below), whose sum is σ = 2516961300. Its totient is φ = 433023360.

The previous prime is 1121224099. The next prime is 1121224109. The reversal of 1121224100 is 14221211.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 95687524 + 1025536576 = 9782^2 + 32024^2 .

It is not an unprimeable number, because it can be changed into a prime (1121224109) 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, 190415 + ... + 196214.

Almost surely, 2^1121224100 is an apocalyptic number.

1121224100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121224100 is an abundant number, since it is smaller than the sum of its proper divisors (1395737200).

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

1121224100 is a wasteful number, since it uses less digits than its factorization.

1121224100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386672 (or 386665 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 1121224100 is about 33484.6845587651. The cubic root of 1121224100 is about 1038.8770238106.

Adding to 1121224100 its reverse (14221211), we get a palindrome (1135445311).

The spelling of 1121224100 in words is "one billion, one hundred twenty-one million, two hundred twenty-four thousand, one hundred".