221210201202101 has 8 divisors (see below), whose sum is σ = 221769158701080. Its totient is φ = 220651252512768.

The previous prime is 221210201202061. The next prime is 221210201202113. The reversal of 221210201202101 is 101202102012122.

221210201202101 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 5502261576100 + 215707939626001 = 2345690^2 + 14686999^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 221210201202101 - 2¹⁴ = 221210201185717 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 221210201202101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (221210201202191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49619465 + ... + 53893521.

It is an arithmetic number, because the mean of its divisors is an integer number (27721144837635).

Almost surely, 2^{221210201202101} is an apocalyptic number.

It is an amenable number.

221210201202101 is a deficient number, since it is larger than the sum of its proper divisors (558957498979).

221210201202101 is a wasteful number, since it uses less digits than its factorization.

221210201202101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4404823.

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

Adding to 221210201202101 its reverse (101202102012122), we get a palindrome (322412303214223).

The spelling of 221210201202101 in words is "two hundred twenty-one trillion, two hundred ten billion, two hundred one million, two hundred two thousand, one hundred one".