11321322500 has 30 divisors (see below), whose sum is σ = 24757473510. Its totient is φ = 4528528000.

The previous prime is 11321322469. The next prime is 11321322517. The reversal of 11321322500 is 522312311.

It can be written as a sum of positive squares in 5 ways, for example, as 3955906816 + 7365415684 = 62896^2 + 85822^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2261765 + ... + 2266764.

It is an arithmetic number, because the mean of its divisors is an integer number (825249117).

Almost surely, 2^11321322500 is an apocalyptic number.

11321322500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11321322500 is an abundant number, since it is smaller than the sum of its proper divisors (13436151010).

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

11321322500 is an equidigital number, since it uses as much as digits as its factorization.

11321322500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4528553 (or 4528536 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 20.

Adding to 11321322500 its reverse (522312311), we get a palindrome (11843634811).

The spelling of 11321322500 in words is "eleven billion, three hundred twenty-one million, three hundred twenty-two thousand, five hundred".