221423312000201 has 4 divisors (see below), whose sum is σ = 221423651277252. Its totient is φ = 221422972723152.

The previous prime is 221423312000197. The next prime is 221423312000207. The reversal of 221423312000201 is 102000213324122.

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 106610994067600 + 114812317932601 = 10325260^2 + 10715051^2 .

It is a cyclic number.

It is not a de Polignac number, because 221423312000201 - 2² = 221423312000197 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (221423312000207) 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, 168657686 + ... + 169965471.

It is an arithmetic number, because the mean of its divisors is an integer number (55355912819313).

Almost surely, 2^{221423312000201} is an apocalyptic number.

It is an amenable number.

221423312000201 is a deficient number, since it is larger than the sum of its proper divisors (339277051).

221423312000201 is an equidigital number, since it uses as much as digits as its factorization.

221423312000201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339277050.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 221423312000201 its reverse (102000213324122), we get a palindrome (323423525324323).

The spelling of 221423312000201 in words is "two hundred twenty-one trillion, four hundred twenty-three billion, three hundred twelve million, two hundred one", and thus it is an aban number.