1121203100 has 36 divisors (see below), whose sum is σ = 2437995000. Its totient is φ = 447562560.

The previous prime is 1121203099. The next prime is 1121203147. The reversal of 1121203100 is 13021211.

It is a super-2 number, since 2×1121203100² = 2514192782899220000, which contains 22 as substring.

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, 38666 + ... + 61134.

Almost surely, 2^1121203100 is an apocalyptic number.

1121203100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1121203100 is an abundant number, since it is smaller than the sum of its proper divisors (1316791900).

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

1121203100 is a wasteful number, since it uses less digits than its factorization.

1121203100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22982 (or 22975 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 11.

The square root of 1121203100 is about 33484.3709811010. The cubic root of 1121203100 is about 1038.8705378774.

Adding to 1121203100 its reverse (13021211), we get a palindrome (1134224311).

The spelling of 1121203100 in words is "one billion, one hundred twenty-one million, two hundred three thousand, one hundred".