203231221123 has 16 divisors (see below), whose sum is σ = 233856748800. Its totient is φ = 173004156000.

The previous prime is 203231221093. The next prime is 203231221153. The reversal of 203231221123 is 321122132302.

It is an interprime number because it is at equal distance from previous prime (203231221093) and next prime (203231221153).

It is a cyclic number.

It is not a de Polignac number, because 203231221123 - 2¹³ = 203231212931 is a prime.

It is a super-2 number, since 2×203231221123² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 203231221094 and 203231221103.

It is not an unprimeable number, because it can be changed into a prime (203231221153) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13145548 + ... + 13160998.

It is an arithmetic number, because the mean of its divisors is an integer number (14616046800).

Almost surely, 2^203231221123 is an apocalyptic number.

203231221123 is a deficient number, since it is larger than the sum of its proper divisors (30625527677).

203231221123 is a wasteful number, since it uses less digits than its factorization.

203231221123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28218.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 203231221123 its reverse (321122132302), we get a palindrome (524353353425).

The spelling of 203231221123 in words is "two hundred three billion, two hundred thirty-one million, two hundred twenty-one thousand, one hundred twenty-three".