11117281420 has 48 divisors (see below), whose sum is σ = 26772637248. Its totient is φ = 3798616320.

The previous prime is 11117281381. The next prime is 11117281421. The reversal of 11117281420 is 2418271111.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (11117281421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94491 + ... + 176530.

It is an arithmetic number, because the mean of its divisors is an integer number (557763276).

Almost surely, 2^11117281420 is an apocalyptic number.

11117281420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

11117281420 is an abundant number, since it is smaller than the sum of its proper divisors (15655355828).

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

11117281420 is a wasteful number, since it uses less digits than its factorization.

11117281420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271330 (or 271328 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 28.

The spelling of 11117281420 in words is "eleven billion, one hundred seventeen million, two hundred eighty-one thousand, four hundred twenty".