203233121011 has 4 divisors (see below), whose sum is σ = 203277802000. Its totient is φ = 203188440024.

The previous prime is 203233120967. The next prime is 203233121023. The reversal of 203233121011 is 110121332302.

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 203233121011 - 2²¹ = 203231023859 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 203233121011.

It is not an unprimeable number, because it can be changed into a prime (203233121711) 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, 22333671 + ... + 22342768.

It is an arithmetic number, because the mean of its divisors is an integer number (50819450500).

Almost surely, 2^203233121011 is an apocalyptic number.

203233121011 is a deficient number, since it is larger than the sum of its proper divisors (44680989).

203233121011 is an equidigital number, since it uses as much as digits as its factorization.

203233121011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44680988.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 203233121011 its reverse (110121332302), we get a palindrome (313354453313).

The spelling of 203233121011 in words is "two hundred three billion, two hundred thirty-three million, one hundred twenty-one thousand, eleven".