11018021216 has 12 divisors (see below), whose sum is σ = 21691729332. Its totient is φ = 5509010592.

The previous prime is 11018021213. The next prime is 11018021221. The reversal of 11018021216 is 61212081011.

It is a super-2 number, since 2×11018021216² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 11018021191 and 11018021200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11018021213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172156550 + ... + 172156613.

It is an arithmetic number, because the mean of its divisors is an integer number (1807644111).

Almost surely, 2^11018021216 is an apocalyptic number.

11018021216 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

11018021216 is a deficient number, since it is larger than the sum of its proper divisors (10673708116).

11018021216 is an equidigital number, since it uses as much as digits as its factorization.

11018021216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344313173 (or 344313165 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 23.

The spelling of 11018021216 in words is "eleven billion, eighteen million, twenty-one thousand, two hundred sixteen".