203122324111213 has 16 divisors (see below), whose sum is σ = 221182010369712. Its totient is φ = 185415001920000.

The previous prime is 203122324111207. The next prime is 203122324111219. The reversal of 203122324111213 is 312111423221302.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (203122324111207) and next prime (203122324111219).

It can be written as a sum of positive squares in 8 ways, for example, as 6999188777604 + 196123135333609 = 2645598^2 + 14004397^2 .

It is a cyclic number.

It is not a de Polignac number, because 203122324111213 - 2²¹ = 203122322014061 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 (203122324111219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93136968 + ... + 95292913.

It is an arithmetic number, because the mean of its divisors is an integer number (13823875648107).

Almost surely, 2^{203122324111213} is an apocalyptic number.

It is an amenable number.

203122324111213 is a deficient number, since it is larger than the sum of its proper divisors (18059686258499).

203122324111213 is a wasteful number, since it uses less digits than its factorization.

203122324111213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188430816.

The product of its (nonzero) digits is 3456, while the sum is 28.

Adding to 203122324111213 its reverse (312111423221302), we get a palindrome (515233747332515).

The spelling of 203122324111213 in words is "two hundred three trillion, one hundred twenty-two billion, three hundred twenty-four million, one hundred eleven thousand, two hundred thirteen".