23203121112 has 64 divisors (see below), whose sum is σ = 64466085600. Its totient is φ = 7732817280.

The previous prime is 23203121057. The next prime is 23203121209. The reversal of 23203121112 is 21112130232.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1665118 + ... + 1678994.

Almost surely, 2^23203121112 is an apocalyptic number.

It is an amenable number.

23203121112 is an abundant number, since it is smaller than the sum of its proper divisors (41262964488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23203121112 is a wasteful number, since it uses less digits than its factorization.

23203121112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21633 (or 21623 counting only the distinct ones).

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

Adding to 23203121112 its reverse (21112130232), we get a palindrome (44315251344).

The spelling of 23203121112 in words is "twenty-three billion, two hundred three million, one hundred twenty-one thousand, one hundred twelve".