23121340044 has 48 divisors (see below), whose sum is σ = 58863221760. Its totient is φ = 7005407040.

The previous prime is 23121340037. The next prime is 23121340051. The reversal of 23121340044 is 44004312132.

It is an interprime number because it is at equal distance from previous prime (23121340037) and next prime (23121340051).

It is a junction number, because it is equal to n+sod(n) for n = 23121339996 and 23121340023.

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, 1669902 + ... + 1683690.

It is an arithmetic number, because the mean of its divisors is an integer number (1226317120).

Almost surely, 2^23121340044 is an apocalyptic number.

It is an amenable number.

23121340044 is an abundant number, since it is smaller than the sum of its proper divisors (35741881716).

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

23121340044 is a wasteful number, since it uses less digits than its factorization.

23121340044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26510 (or 26508 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 23121340044 its reverse (44004312132), we get a palindrome (67125652176).

The spelling of 23121340044 in words is "twenty-three billion, one hundred twenty-one million, three hundred forty thousand, forty-four".