221120210100101 has 16 divisors (see below), whose sum is σ = 239832370931328. Its totient is φ = 202656453240000.

The previous prime is 221120210100091. The next prime is 221120210100143. The reversal of 221120210100101 is 101001012021122.

It is a cyclic number.

It is not a de Polignac number, because 221120210100101 - 2¹⁸ = 221120209837957 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221120210100701) 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, 105851945 + ... + 107920686.

It is an arithmetic number, because the mean of its divisors is an integer number (14989523183208).

Almost surely, 2^{221120210100101} is an apocalyptic number.

It is an amenable number.

221120210100101 is a deficient number, since it is larger than the sum of its proper divisors (18712160831227).

221120210100101 is a wasteful number, since it uses less digits than its factorization.

221120210100101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213773212.

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

Adding to 221120210100101 its reverse (101001012021122), we get a palindrome (322121222121223).

The spelling of 221120210100101 in words is "two hundred twenty-one trillion, one hundred twenty billion, two hundred ten million, one hundred thousand, one hundred one".