221012110201 has 4 divisors (see below), whose sum is σ = 221020424100. Its totient is φ = 221003796304.

The previous prime is 221012110177. The next prime is 221012110217. The reversal of 221012110201 is 102011210122.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 121044847225 + 99967262976 = 347915^2 + 316176^2 .

It is a cyclic number.

It is not a de Polignac number, because 221012110201 - 2¹¹ = 221012108153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221012110261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4116946 + ... + 4170283.

It is an arithmetic number, because the mean of its divisors is an integer number (55255106025).

Almost surely, 2^221012110201 is an apocalyptic number.

It is an amenable number.

221012110201 is a deficient number, since it is larger than the sum of its proper divisors (8313899).

221012110201 is an equidigital number, since it uses as much as digits as its factorization.

221012110201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8313898.

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

Adding to 221012110201 its reverse (102011210122), we get a palindrome (323023320323).

The spelling of 221012110201 in words is "two hundred twenty-one billion, twelve million, one hundred ten thousand, two hundred one".