203213333121 has 4 divisors (see below), whose sum is σ = 270951110832. Its totient is φ = 135475555412.

The previous prime is 203213333117. The next prime is 203213333131. The reversal of 203213333121 is 121333312302.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 203213333121 - 2² = 203213333117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 203213333091 and 203213333100.

It is not an unprimeable number, because it can be changed into a prime (203213333101) 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 in 3 ways as a sum of consecutive naturals, for example, 33868888851 + ... + 33868888856.

It is an arithmetic number, because the mean of its divisors is an integer number (67737777708).

Almost surely, 2^203213333121 is an apocalyptic number.

It is an amenable number.

203213333121 is a deficient number, since it is larger than the sum of its proper divisors (67737777711).

203213333121 is an equidigital number, since it uses as much as digits as its factorization.

203213333121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67737777710.

The product of its (nonzero) digits is 1944, while the sum is 24.

Adding to 203213333121 its reverse (121333312302), we get a palindrome (324546645423).

The spelling of 203213333121 in words is "two hundred three billion, two hundred thirteen million, three hundred thirty-three thousand, one hundred twenty-one".