11163456021 has 16 divisors (see below), whose sum is σ = 15180595200. Its totient is φ = 7295039088.

The previous prime is 11163455993. The next prime is 11163456037. The reversal of 11163456021 is 12065436111.

It is a happy number.

It is not a de Polignac number, because 11163456021 - 2¹⁹ = 11162931733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 11163456021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11163456071) 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, 29461 + ... + 152298.

It is an arithmetic number, because the mean of its divisors is an integer number (948787200).

Almost surely, 2^11163456021 is an apocalyptic number.

It is an amenable number.

11163456021 is a deficient number, since it is larger than the sum of its proper divisors (4017139179).

11163456021 is a wasteful number, since it uses less digits than its factorization.

11163456021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182168.

The product of its (nonzero) digits is 4320, while the sum is 30.

The spelling of 11163456021 in words is "eleven billion, one hundred sixty-three million, four hundred fifty-six thousand, twenty-one".