201220432443 has 8 divisors (see below), whose sum is σ = 298104344400. Its totient is φ = 134146954944.

The previous prime is 201220432433. The next prime is 201220432447. The reversal of 201220432443 is 344234022102.

201220432443 is a `hidden beast` number, since 2 + 0 + 1 + 220 + 432 + 4 + 4 + 3 = 666.

It is not a de Polignac number, because 201220432443 - 2⁶ = 201220432379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 7452608609 = 201220432443 / (2 + 0 + 1 + 2 + 2 + 0 + 4 + 3 + 2 + 4 + 4 + 3).

It is not an unprimeable number, because it can be changed into a prime (201220432447) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3726304278 + ... + 3726304331.

It is an arithmetic number, because the mean of its divisors is an integer number (37263043050).

Almost surely, 2^201220432443 is an apocalyptic number.

201220432443 is a deficient number, since it is larger than the sum of its proper divisors (96883911957).

201220432443 is an equidigital number, since it uses as much as digits as its factorization.

201220432443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7452608618 (or 7452608612 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 201220432443 its reverse (344234022102), we get a palindrome (545454454545).

The spelling of 201220432443 in words is "two hundred one billion, two hundred twenty million, four hundred thirty-two thousand, four hundred forty-three".