23121133002 has 48 divisors (see below), whose sum is σ = 54924667200. Its totient is φ = 6971184000.

The previous prime is 23121133001. The next prime is 23121133027. The reversal of 23121133002 is 20033112132.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (23121133001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 253999 + ... + 332802.

It is an arithmetic number, because the mean of its divisors is an integer number (1144263900).

Almost surely, 2^23121133002 is an apocalyptic number.

23121133002 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

23121133002 is an abundant number, since it is smaller than the sum of its proper divisors (31803534198).

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

23121133002 is a wasteful number, since it uses less digits than its factorization.

23121133002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 587019 (or 587016 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 23121133002 its reverse (20033112132), we get a palindrome (43154245134).

The spelling of 23121133002 in words is "twenty-three billion, one hundred twenty-one million, one hundred thirty-three thousand, two".