221000221200012 has 24 divisors (see below), whose sum is σ = 515667596362800. Its totient is φ = 73666681319616.

The previous prime is 221000221199963. The next prime is 221000221200013. The reversal of 221000221200012 is 210002122000122.

It is a junction number, because it is equal to n+sod(n) for n = 221000221199964 and 221000221200000.

It is not an unprimeable number, because it can be changed into a prime (221000221200013) 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, 9800814 + ... + 23196042.

It is an arithmetic number, because the mean of its divisors is an integer number (21486149848450).

Almost surely, 2^{221000221200012} is an apocalyptic number.

It is an amenable number.

221000221200012 is an abundant number, since it is smaller than the sum of its proper divisors (294667375162788).

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

221000221200012 is a wasteful number, since it uses less digits than its factorization.

221000221200012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14770105 (or 14770103 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 221000221200012 its reverse (210002122000122), we get a palindrome (431002343200134).

The spelling of 221000221200012 in words is "two hundred twenty-one trillion, two hundred twenty-one million, two hundred thousand, twelve".