203212112291 has 2 divisors, whose sum is σ = 203212112292. Its totient is φ = 203212112290.

The previous prime is 203212112269. The next prime is 203212112297. The reversal of 203212112291 is 192211212302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203212112291 - 2¹⁴ = 203212095907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203212112291.

It is not a weakly prime, because it can be changed into another prime (203212112297) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101606056145 + 101606056146.

It is an arithmetic number, because the mean of its divisors is an integer number (101606056146).

Almost surely, 2^203212112291 is an apocalyptic number.

203212112291 is a deficient number, since it is larger than the sum of its proper divisors (1).

203212112291 is an equidigital number, since it uses as much as digits as its factorization.

203212112291 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

Adding to 203212112291 its reverse (192211212302), we get a palindrome (395423324593).

The spelling of 203212112291 in words is "two hundred three billion, two hundred twelve million, one hundred twelve thousand, two hundred ninety-one".