11147899220 has 12 divisors (see below), whose sum is σ = 23410588404. Its totient is φ = 4459159680.

The previous prime is 11147899219. The next prime is 11147899223. The reversal of 11147899220 is 2299874111.

It is a happy number.

11147899220 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 5494663876 + 5653235344 = 74126^2 + 75188^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11147899223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 278697461 + ... + 278697500.

It is an arithmetic number, because the mean of its divisors is an integer number (1950882367).

Almost surely, 2^11147899220 is an apocalyptic number.

11147899220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11147899220 is an abundant number, since it is smaller than the sum of its proper divisors (12262689184).

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

11147899220 is a wasteful number, since it uses less digits than its factorization.

11147899220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557394970 (or 557394968 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 44.

The spelling of 11147899220 in words is "eleven billion, one hundred forty-seven million, eight hundred ninety-nine thousand, two hundred twenty".