203213301121 has 4 divisors (see below), whose sum is σ = 203214391744. Its totient is φ = 203212210500.

The previous prime is 203213301103. The next prime is 203213301143. The reversal of 203213301121 is 121103312302.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 203213301121 - 2¹⁵ = 203213268353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (203213301721) 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, 187605 + ... + 664546.

It is an arithmetic number, because the mean of its divisors is an integer number (50803597936).

Almost surely, 2^203213301121 is an apocalyptic number.

It is an amenable number.

203213301121 is a deficient number, since it is larger than the sum of its proper divisors (1090623).

203213301121 is an equidigital number, since it uses as much as digits as its factorization.

203213301121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1090622.

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

Adding to 203213301121 its reverse (121103312302), we get a palindrome (324316613423).

The spelling of 203213301121 in words is "two hundred three billion, two hundred thirteen million, three hundred one thousand, one hundred twenty-one".