210221201020112 has 80 divisors (see below), whose sum is σ = 425724602662800. Its totient is φ = 100432233431040.

The previous prime is 210221201020099. The next prime is 210221201020151. The reversal of 210221201020112 is 211020102122012.

It can be written as a sum of positive squares in 8 ways, for example, as 141222633616 + 210079978386496 = 375796^2 + 14494136^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 617384564 + ... + 617724972.

It is an arithmetic number, because the mean of its divisors is an integer number (5321557533285).

Almost surely, 2^{210221201020112} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210221201020112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (212862301331400).

210221201020112 is an abundant number, since it is smaller than the sum of its proper divisors (215503401642688).

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

210221201020112 is a wasteful number, since it uses less digits than its factorization.

210221201020112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354264 (or 354258 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 210221201020112 its reverse (211020102122012), we get a palindrome (421241303142124).

The spelling of 210221201020112 in words is "two hundred ten trillion, two hundred twenty-one billion, two hundred one million, twenty thousand, one hundred twelve".