221331010201 has 4 divisors (see below), whose sum is σ = 252949725952. Its totient is φ = 189712294452.

The previous prime is 221331010193. The next prime is 221331010249. The reversal of 221331010201 is 102010133122.

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 a cyclic number.

It is not a de Polignac number, because 221331010201 - 2³ = 221331010193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (221331010001) 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, 15809357865 + ... + 15809357878.

It is an arithmetic number, because the mean of its divisors is an integer number (63237431488).

Almost surely, 2^221331010201 is an apocalyptic number.

It is an amenable number.

221331010201 is a deficient number, since it is larger than the sum of its proper divisors (31618715751).

221331010201 is an equidigital number, since it uses as much as digits as its factorization.

221331010201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31618715750.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 221331010201 its reverse (102010133122), we get a palindrome (323341143323).

The spelling of 221331010201 in words is "two hundred twenty-one billion, three hundred thirty-one million, ten thousand, two hundred one".