201044430221 has 2 divisors, whose sum is σ = 201044430222. Its totient is φ = 201044430220.

The previous prime is 201044430053. The next prime is 201044430227. The reversal of 201044430221 is 122034440102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115473554596 + 85570875625 = 339814^2 + 292525^2 .

It is a cyclic number.

It is not a de Polignac number, because 201044430221 - 2²⁶ = 200977321357 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (201044430227) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 100522215110 + 100522215111.

It is an arithmetic number, because the mean of its divisors is an integer number (100522215111).

Almost surely, 2^201044430221 is an apocalyptic number.

It is an amenable number.

201044430221 is a deficient number, since it is larger than the sum of its proper divisors (1).

201044430221 is an equidigital number, since it uses as much as digits as its factorization.

201044430221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 201044430221 its reverse (122034440102), we get a palindrome (323078870323).

The spelling of 201044430221 in words is "two hundred one billion, forty-four million, four hundred thirty thousand, two hundred twenty-one".