201522344243 has 16 divisors (see below), whose sum is σ = 220801617792. Its totient is φ = 182404656000.

The previous prime is 201522344213. The next prime is 201522344251. The reversal of 201522344243 is 342443225102.

It is a cyclic number.

It is not a de Polignac number, because 201522344243 - 2¹² = 201522340147 is a prime.

It is a super-2 number, since 2×201522344243² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (201522344203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2295548 + ... + 2381718.

It is an arithmetic number, because the mean of its divisors is an integer number (13800101112).

Almost surely, 2^201522344243 is an apocalyptic number.

201522344243 is a deficient number, since it is larger than the sum of its proper divisors (19279273549).

201522344243 is a wasteful number, since it uses less digits than its factorization.

201522344243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87106.

The product of its (nonzero) digits is 46080, while the sum is 32.

Adding to 201522344243 its reverse (342443225102), we get a palindrome (543965569345).

The spelling of 201522344243 in words is "two hundred one billion, five hundred twenty-two million, three hundred forty-four thousand, two hundred forty-three".