23121205134 has 8 divisors (see below), whose sum is σ = 46242410280. Its totient is φ = 7707068376.

The previous prime is 23121205117. The next prime is 23121205139. The reversal of 23121205134 is 43150212132.

It is a sphenic number, since it is the product of 3 distinct primes.

23121205134 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23121205139) 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, 1926767089 + ... + 1926767100.

It is an arithmetic number, because the mean of its divisors is an integer number (5780301285).

Almost surely, 2^23121205134 is an apocalyptic number.

23121205134 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

23121205134 is a wasteful number, since it uses less digits than its factorization.

23121205134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3853534194.

The product of its (nonzero) digits is 1440, while the sum is 24.

Adding to 23121205134 its reverse (43150212132), we get a palindrome (66271417266).

The spelling of 23121205134 in words is "twenty-three billion, one hundred twenty-one million, two hundred five thousand, one hundred thirty-four".