221001112000212 has 24 divisors (see below), whose sum is σ = 515669723956800. Its totient is φ = 73666971244416.

The previous prime is 221001112000183. The next prime is 221001112000219. The reversal of 221001112000212 is 212000211100122.

It is a junction number, because it is equal to n+sod(n) for n = 221001112000191 and 221001112000200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221001112000219) 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, 6765489 + ... + 22085607.

It is an arithmetic number, because the mean of its divisors is an integer number (21486238498200).

Almost surely, 2^{221001112000212} is an apocalyptic number.

It is an amenable number.

221001112000212 is an abundant number, since it is smaller than the sum of its proper divisors (294668611956588).

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

221001112000212 is a wasteful number, since it uses less digits than its factorization.

221001112000212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16522255 (or 16522253 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 221001112000212 its reverse (212000211100122), we get a palindrome (433001323100334).

The spelling of 221001112000212 in words is "two hundred twenty-one trillion, one billion, one hundred twelve million, two hundred twelve", and thus it is an aban number.