11223221916 has 24 divisors (see below), whose sum is σ = 26205581584. Its totient is φ = 3738493440.

The previous prime is 11223221851. The next prime is 11223221917. The reversal of 11223221916 is 61912232211.

It is a super-2 number, since 2×11223221916² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11223221917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 304405 + ... + 339276.

Almost surely, 2^11223221916 is an apocalyptic number.

It is an amenable number.

11223221916 is an abundant number, since it is smaller than the sum of its proper divisors (14982359668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

11223221916 is a wasteful number, since it uses less digits than its factorization.

11223221916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645141 (or 645139 counting only the distinct ones).

The product of its digits is 2592, while the sum is 30.

The spelling of 11223221916 in words is "eleven billion, two hundred twenty-three million, two hundred twenty-one thousand, nine hundred sixteen".