23121353212000 has 96 divisors (see below), whose sum is σ = 56810663975520. Its totient is φ = 9248297228800.

The previous prime is 23121353211977. The next prime is 23121353212021. The reversal of 23121353212000 is 21235312132.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 280874847 + ... + 280957153.

It is an arithmetic number, because the mean of its divisors is an integer number (591777749745).

Almost surely, 2^{23121353212000} is an apocalyptic number.

23121353212000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

23121353212000 is an abundant number, since it is smaller than the sum of its proper divisors (33689310763520).

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

23121353212000 is an equidigital number, since it uses as much as digits as its factorization.

23121353212000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152561 (or 152543 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 23121353212000 its reverse (21235312132), we get a palindrome (23142588524132).

The spelling of 23121353212000 in words is "twenty-three trillion, one hundred twenty-one billion, three hundred fifty-three million, two hundred twelve thousand".