11243210920 has 32 divisors (see below), whose sum is σ = 25547701320. Its totient is φ = 4452755200.

The previous prime is 11243210857. The next prime is 11243210963. The reversal of 11243210920 is 2901234211.

It can be written as a sum of positive squares in 4 ways, for example, as 10800613476 + 442597444 = 103926^2 + 21038^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1387447 + ... + 1395526.

Almost surely, 2^11243210920 is an apocalyptic number.

11243210920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11243210920 is an abundant number, since it is smaller than the sum of its proper divisors (14304490400).

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

11243210920 is a wasteful number, since it uses less digits than its factorization.

11243210920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783085 (or 2783081 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The spelling of 11243210920 in words is "eleven billion, two hundred forty-three million, two hundred ten thousand, nine hundred twenty".