1151121100 has 18 divisors (see below), whose sum is σ = 2497933004. Its totient is φ = 460448400.

The previous prime is 1151121091. The next prime is 1151121121. The reversal of 1151121100 is 11211511.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5755506 + ... + 5755705.

Almost surely, 2^1151121100 is an apocalyptic number.

1151121100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1151121100 is an abundant number, since it is smaller than the sum of its proper divisors (1346811904).

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

1151121100 is a wasteful number, since it uses less digits than its factorization.

1151121100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11511225 (or 11511218 counting only the distinct ones).

The product of its (nonzero) digits is 10, while the sum is 13.

The square root of 1151121100 is about 33928.1756067137. The cubic root of 1151121100 is about 1048.0298961520.

Adding to 1151121100 its reverse (11211511), we get a palindrome (1162332611).

The spelling of 1151121100 in words is "one billion, one hundred fifty-one million, one hundred twenty-one thousand, one hundred".