23121011213300 has 648 divisors, whose sum is σ = 72091327609728. Its totient is φ = 6362924198400.

The previous prime is 23121011213221. The next prime is 23121011213327. The reversal of 23121011213300 is 331211012132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 215 ways as a sum of consecutive naturals, for example, 177211889 + ... + 177342311.

Almost surely, 2^{23121011213300} is an apocalyptic number.

23121011213300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23121011213300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36045663804864).

23121011213300 is an abundant number, since it is smaller than the sum of its proper divisors (48970316396428).

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

23121011213300 is a wasteful number, since it uses less digits than its factorization.

23121011213300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 130509 (or 130484 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 23121011213300 its reverse (331211012132), we get a palindrome (23452222225432).

The spelling of 23121011213300 in words is "twenty-three trillion, one hundred twenty-one billion, eleven million, two hundred thirteen thousand, three hundred".