210221101201 has 4 divisors (see below), whose sum is σ = 210222204400. Its totient is φ = 210219998004.

The previous prime is 210221101169. The next prime is 210221101231. The reversal of 210221101201 is 102101122012.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 210221101201 - 2⁵ = 210221101169 is a prime.

It is a super-2 number, since 2×210221101201² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210221101231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184191 + ... + 674068.

It is an arithmetic number, because the mean of its divisors is an integer number (52555551100).

Almost surely, 2^210221101201 is an apocalyptic number.

It is an amenable number.

210221101201 is a deficient number, since it is larger than the sum of its proper divisors (1103199).

210221101201 is an equidigital number, since it uses as much as digits as its factorization.

210221101201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1103198.

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

Adding to 210221101201 its reverse (102101122012), we get a palindrome (312322223213).

The spelling of 210221101201 in words is "two hundred ten billion, two hundred twenty-one million, one hundred one thousand, two hundred one".