201232120213 has 4 divisors (see below), whose sum is σ = 206140220748. Its totient is φ = 196324019680.

The previous prime is 201232120171. The next prime is 201232120223. The reversal of 201232120213 is 312021232102.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 312021232102 = 2 ⋅156010616051.

It can be written as a sum of positive squares in 2 ways, for example, as 87543790884 + 113688329329 = 295878^2 + 337177^2 .

It is a cyclic number.

It is not a de Polignac number, because 201232120213 - 2²¹ = 201230023061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201232120223) 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 3 ways as a sum of consecutive naturals, for example, 2454050206 + ... + 2454050287.

It is an arithmetic number, because the mean of its divisors is an integer number (51535055187).

Almost surely, 2^201232120213 is an apocalyptic number.

It is an amenable number.

201232120213 is a deficient number, since it is larger than the sum of its proper divisors (4908100535).

201232120213 is an equidigital number, since it uses as much as digits as its factorization.

201232120213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4908100534.

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

Adding to 201232120213 its reverse (312021232102), we get a palindrome (513253352315).

The spelling of 201232120213 in words is "two hundred one billion, two hundred thirty-two million, one hundred twenty thousand, two hundred thirteen".