210112201222221 has 16 divisors (see below), whose sum is σ = 280298709393408. Its totient is φ = 140000249766000.

The previous prime is 210112201222219. The next prime is 210112201222229. The reversal of 210112201222221 is 122222102211012.

It is not a de Polignac number, because 210112201222221 - 2¹ = 210112201222219 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210112201222229) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322332736 + ... + 322983926.

It is an arithmetic number, because the mean of its divisors is an integer number (17518669337088).

Almost surely, 2^{210112201222221} is an apocalyptic number.

It is an amenable number.

210112201222221 is a deficient number, since it is larger than the sum of its proper divisors (70186508171187).

210112201222221 is a wasteful number, since it uses less digits than its factorization.

210112201222221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 708272.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 210112201222221 its reverse (122222102211012), we get a palindrome (332334303433233).

The spelling of 210112201222221 in words is "two hundred ten trillion, one hundred twelve billion, two hundred one million, two hundred twenty-two thousand, two hundred twenty-one".