23121203102 has 4 divisors (see below), whose sum is σ = 34681804656. Its totient is φ = 11560601550.

The previous prime is 23121203099. The next prime is 23121203167. The reversal of 23121203102 is 20130212132.

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

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 as a sum of consecutive naturals, namely, 5780300774 + ... + 5780300777.

It is an arithmetic number, because the mean of its divisors is an integer number (8670451164).

Almost surely, 2^23121203102 is an apocalyptic number.

23121203102 is a deficient number, since it is larger than the sum of its proper divisors (11560601554).

23121203102 is a wasteful number, since it uses less digits than its factorization.

23121203102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11560601553.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 23121203102 its reverse (20130212132), we get a palindrome (43251415234).

The spelling of 23121203102 in words is "twenty-three billion, one hundred twenty-one million, two hundred three thousand, one hundred two".