221010102100201 has 8 divisors (see below), whose sum is σ = 221928358240424. Its totient is φ = 220091855892480.

The previous prime is 221010102100163. The next prime is 221010102100211. The reversal of 221010102100201 is 102001201010122.

It can be written as a sum of positive squares in 4 ways, for example, as 146147789505600 + 74862312594601 = 12089160^2 + 8652301^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-221010102100201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221010102100211) 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 7 ways as a sum of consecutive naturals, for example, 43908421 + ... + 48682333.

It is an arithmetic number, because the mean of its divisors is an integer number (27741044780053).

Almost surely, 2^{221010102100201} is an apocalyptic number.

It is an amenable number.

221010102100201 is a deficient number, since it is larger than the sum of its proper divisors (918256140223).

221010102100201 is a wasteful number, since it uses less digits than its factorization.

221010102100201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4966251.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 221010102100201 its reverse (102001201010122), we get a palindrome (323011303110323).

The spelling of 221010102100201 in words is "two hundred twenty-one trillion, ten billion, one hundred two million, one hundred thousand, two hundred one".