2203121311 has 4 divisors (see below), whose sum is σ = 2203238392. Its totient is φ = 2203004232.

The previous prime is 2203121243. The next prime is 2203121317. The reversal of 2203121311 is 1131213022.

It is a semiprime because it is the product of two primes, 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 2203121311 - 2³¹ = 55637663 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 (2203121317) 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, 23205 + ... + 70318.

It is an arithmetic number, because the mean of its divisors is an integer number (550809598).

Almost surely, 2^2203121311 is an apocalyptic number.

2203121311 is a deficient number, since it is larger than the sum of its proper divisors (117081).

2203121311 is an equidigital number, since it uses as much as digits as its factorization.

2203121311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117080.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2203121311 is about 46937.4190918078. The cubic root of 2203121311 is about 1301.2062395839.

Adding to 2203121311 its reverse (1131213022), we get a palindrome (3334334333).

The spelling of 2203121311 in words is "two billion, two hundred three million, one hundred twenty-one thousand, three hundred eleven".