210221112101 has 64 divisors (see below), whose sum is σ = 284724357120. Its totient is φ = 149890487040.

The previous prime is 210221112097. The next prime is 210221112109. The reversal of 210221112101 is 101211122012.

210221112101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 210221112101 - 2² = 210221112097 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210221112109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 65630966 + ... + 65634168.

It is an arithmetic number, because the mean of its divisors is an integer number (4448818080).

Almost surely, 2^210221112101 is an apocalyptic number.

It is an amenable number.

210221112101 is a deficient number, since it is larger than the sum of its proper divisors (74503245019).

210221112101 is a wasteful number, since it uses less digits than its factorization.

210221112101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3786.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 210221112101 its reverse (101211122012), we get a palindrome (311432234113).

The spelling of 210221112101 in words is "two hundred ten billion, two hundred twenty-one million, one hundred twelve thousand, one hundred one".