23121520241204 has 192 divisors, whose sum is σ = 53344908288000. Its totient is φ = 8502145344000.

The previous prime is 23121520241189. The next prime is 23121520241233. The reversal of 23121520241204 is 40214202512132.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 159310382 + ... + 159455450.

It is an arithmetic number, because the mean of its divisors is an integer number (277838064000).

Almost surely, 2^{23121520241204} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23121520241204, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26672454144000).

23121520241204 is an abundant number, since it is smaller than the sum of its proper divisors (30223388046796).

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

23121520241204 is a wasteful number, since it uses less digits than its factorization.

23121520241204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145414 (or 145412 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 29.

Adding to 23121520241204 its reverse (40214202512132), we get a palindrome (63335722753336).

The spelling of 23121520241204 in words is "twenty-three trillion, one hundred twenty-one billion, five hundred twenty million, two hundred forty-one thousand, two hundred four".