11162216021 has 4 divisors (see below), whose sum is σ = 12176962944. Its totient is φ = 10147469100.

The previous prime is 11162215993. The next prime is 11162216027. The reversal of 11162216021 is 12061226111.

11162216021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12061226111 = 11 ⋅1096475101.

It is a cyclic number.

It is not a de Polignac number, because 11162216021 - 2¹⁴ = 11162199637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11162216027) 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, 507373445 + ... + 507373466.

It is an arithmetic number, because the mean of its divisors is an integer number (3044240736).

Almost surely, 2^11162216021 is an apocalyptic number.

11162216021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

11162216021 is a deficient number, since it is larger than the sum of its proper divisors (1014746923).

11162216021 is a wasteful number, since it uses less digits than its factorization.

11162216021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014746922.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 11162216021 in words is "eleven billion, one hundred sixty-two million, two hundred sixteen thousand, twenty-one".