221235246201 has 4 divisors (see below), whose sum is σ = 294980328272. Its totient is φ = 147490164132.

The previous prime is 221235246191. The next prime is 221235246217. The reversal of 221235246201 is 102642532122.

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.

It is not a de Polignac number, because 221235246201 - 2²² = 221231051897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221235246241) 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, 36872541031 + ... + 36872541036.

It is an arithmetic number, because the mean of its divisors is an integer number (73745082068).

Almost surely, 2^221235246201 is an apocalyptic number.

It is an amenable number.

221235246201 is a deficient number, since it is larger than the sum of its proper divisors (73745082071).

221235246201 is an equidigital number, since it uses as much as digits as its factorization.

221235246201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73745082070.

The product of its (nonzero) digits is 11520, while the sum is 30.

Adding to 221235246201 its reverse (102642532122), we get a palindrome (323877778323).

The spelling of 221235246201 in words is "two hundred twenty-one billion, two hundred thirty-five million, two hundred forty-six thousand, two hundred one".