203021221113 has 12 divisors (see below), whose sum is σ = 308687237040. Its totient is φ = 128223929016.

The previous prime is 203021221111. The next prime is 203021221157. The reversal of 203021221113 is 311122120302.

It is not a de Polignac number, because 203021221113 - 2¹ = 203021221111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (203021221111) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 593629131 + ... + 593629472.

It is an arithmetic number, because the mean of its divisors is an integer number (25723936420).

Almost surely, 2^203021221113 is an apocalyptic number.

It is an amenable number.

203021221113 is a deficient number, since it is larger than the sum of its proper divisors (105666015927).

203021221113 is a wasteful number, since it uses less digits than its factorization.

203021221113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1187258628 (or 1187258625 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 203021221113 its reverse (311122120302), we get a palindrome (514143341415).

It can be divided in two parts, 2030212 and 21113, that added together give a triangular number (2051325 = T₂₀₂₅).

The spelling of 203021221113 in words is "two hundred three billion, twenty-one million, two hundred twenty-one thousand, one hundred thirteen".