23121330021300 has 144 divisors (see below), whose sum is σ = 76460248592000. Its totient is φ = 5284480227840.

The previous prime is 23121330021287. The next prime is 23121330021373. The reversal of 23121330021300 is 312003312132.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28148826 + ... + 28958574.

Almost surely, 2^{23121330021300} is an apocalyptic number.

23121330021300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23121330021300 is an abundant number, since it is smaller than the sum of its proper divisors (53338918570700).

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

23121330021300 is a wasteful number, since it uses less digits than its factorization.

23121330021300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 823370 (or 823363 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 23121330021300 its reverse (312003312132), we get a palindrome (23433333333432).

The spelling of 23121330021300 in words is "twenty-three trillion, one hundred twenty-one billion, three hundred thirty million, twenty-one thousand, three hundred".