205401212303 has 4 divisors (see below), whose sum is σ = 234744242640. Its totient is φ = 176058181968.

The previous prime is 205401212251. The next prime is 205401212327. The reversal of 205401212303 is 303212104502.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 205401212303 - 2¹⁴ = 205401195919 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 (205401212333) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14671515158 + ... + 14671515171.

It is an arithmetic number, because the mean of its divisors is an integer number (58686060660).

Almost surely, 2^205401212303 is an apocalyptic number.

205401212303 is a deficient number, since it is larger than the sum of its proper divisors (29343030337).

205401212303 is an equidigital number, since it uses as much as digits as its factorization.

205401212303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29343030336.

The product of its (nonzero) digits is 1440, while the sum is 23.

Adding to 205401212303 its reverse (303212104502), we get a palindrome (508613316805).

The spelling of 205401212303 in words is "two hundred five billion, four hundred one million, two hundred twelve thousand, three hundred three".