11183278421 has 16 divisors (see below), whose sum is σ = 12873369600. Its totient is φ = 9516521520.

The previous prime is 11183278361. The next prime is 11183278441. The reversal of 11183278421 is 12487238111.

It is a cyclic number.

It is not a de Polignac number, because 11183278421 - 2³⁰ = 10109536597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11183278441) 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, 641936 + ... + 659126.

It is an arithmetic number, because the mean of its divisors is an integer number (804585600).

Almost surely, 2^11183278421 is an apocalyptic number.

It is an amenable number.

11183278421 is a deficient number, since it is larger than the sum of its proper divisors (1690091179).

11183278421 is a wasteful number, since it uses less digits than its factorization.

11183278421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17864.

The product of its digits is 21504, while the sum is 38.

The spelling of 11183278421 in words is "eleven billion, one hundred eighty-three million, two hundred seventy-eight thousand, four hundred twenty-one".