11721228283 has 16 divisors (see below), whose sum is σ = 12408016896. Its totient is φ = 11049445440.

The previous prime is 11721228271. The next prime is 11721228293. The reversal of 11721228283 is 38282212711.

It is a cyclic number.

It is not a de Polignac number, because 11721228283 - 2²¹ = 11719131131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11721228203) 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, 3542716 + ... + 3546022.

It is an arithmetic number, because the mean of its divisors is an integer number (775501056).

Almost surely, 2^11721228283 is an apocalyptic number.

11721228283 is a deficient number, since it is larger than the sum of its proper divisors (686788613).

11721228283 is a wasteful number, since it uses less digits than its factorization.

11721228283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5514.

The product of its digits is 21504, while the sum is 37.

The spelling of 11721228283 in words is "eleven billion, seven hundred twenty-one million, two hundred twenty-eight thousand, two hundred eighty-three".