221983311136 has 12 divisors (see below), whose sum is σ = 437029643862. Its totient is φ = 110991655552.

The previous prime is 221983311083. The next prime is 221983311157. The reversal of 221983311136 is 631113389122.

It can be written as a sum of positive squares in only one way, i.e., 215685936400 + 6297374736 = 464420^2 + 79356^2 .

It is a super-3 number, since 3×221983311136³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3468489205 + ... + 3468489268.

Almost surely, 2^221983311136 is an apocalyptic number.

It is an amenable number.

221983311136 is a deficient number, since it is larger than the sum of its proper divisors (215046332726).

221983311136 is an equidigital number, since it uses as much as digits as its factorization.

221983311136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6936978483 (or 6936978475 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The spelling of 221983311136 in words is "two hundred twenty-one billion, nine hundred eighty-three million, three hundred eleven thousand, one hundred thirty-six".