221200011012 has 24 divisors (see below), whose sum is σ = 530082910336. Its totient is φ = 71740543968.

The previous prime is 221200010987. The next prime is 221200011041. The reversal of 221200011012 is 210110002122.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 249098668 + ... + 249099555.

Almost surely, 2^221200011012 is an apocalyptic number.

It is an amenable number.

221200011012 is an abundant number, since it is smaller than the sum of its proper divisors (308882899324).

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

221200011012 is a wasteful number, since it uses less digits than its factorization.

221200011012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498198267 (or 498198265 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 221200011012 its reverse (210110002122), we get a palindrome (431310013134).

The spelling of 221200011012 in words is "two hundred twenty-one billion, two hundred million, eleven thousand, twelve".