201044423421 has 12 divisors (see below), whose sum is σ = 290401560540. Its totient is φ = 134027741760.

The previous prime is 201044423407. The next prime is 201044423423. The reversal of 201044423421 is 124324440102.

It can be written as a sum of positive squares in 2 ways, for example, as 75169188900 + 125875234521 = 274170^2 + 354789^2 .

It is not a de Polignac number, because 201044423421 - 2¹⁴ = 201044407037 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201044423423) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 897595 + ... + 1098983.

It is an arithmetic number, because the mean of its divisors is an integer number (24200130045).

Almost surely, 2^201044423421 is an apocalyptic number.

It is an amenable number.

201044423421 is a deficient number, since it is larger than the sum of its proper divisors (89357137119).

201044423421 is a wasteful number, since it uses less digits than its factorization.

201044423421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312316 (or 312313 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

Adding to 201044423421 its reverse (124324440102), we get a palindrome (325368863523).

The spelling of 201044423421 in words is "two hundred one billion, forty-four million, four hundred twenty-three thousand, four hundred twenty-one".