23121011203 has 4 divisors (see below), whose sum is σ = 23349932208. Its totient is φ = 22892090200.

The previous prime is 23121011191. The next prime is 23121011237. The reversal of 23121011203 is 30211012132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23121011203 - 2⁹ = 23121010691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23121011503) 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, 114460351 + ... + 114460552.

It is an arithmetic number, because the mean of its divisors is an integer number (5837483052).

Almost surely, 2^23121011203 is an apocalyptic number.

23121011203 is a deficient number, since it is larger than the sum of its proper divisors (228921005).

23121011203 is a wasteful number, since it uses less digits than its factorization.

23121011203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228921004.

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

Adding to 23121011203 its reverse (30211012132), we get a palindrome (53332023335).

The spelling of 23121011203 in words is "twenty-three billion, one hundred twenty-one million, eleven thousand, two hundred three".