43112320201 has 2 divisors, whose sum is σ = 43112320202. Its totient is φ = 43112320200.

The previous prime is 43112320193. The next prime is 43112320213. The reversal of 43112320201 is 10202321134.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22185804601 + 20926515600 = 148949^2 + 144660^2 .

It is a cyclic number.

It is not a de Polignac number, because 43112320201 - 2³ = 43112320193 is a prime.

It is a super-2 number, since 2×43112320201² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43112320231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21556160100 + 21556160101.

It is an arithmetic number, because the mean of its divisors is an integer number (21556160101).

Almost surely, 2^43112320201 is an apocalyptic number.

It is an amenable number.

43112320201 is a deficient number, since it is larger than the sum of its proper divisors (1).

43112320201 is an equidigital number, since it uses as much as digits as its factorization.

43112320201 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 43112320201 its reverse (10202321134), we get a palindrome (53314641335).

The spelling of 43112320201 in words is "forty-three billion, one hundred twelve million, three hundred twenty thousand, two hundred one".