23121000002 has 8 divisors (see below), whose sum is σ = 34770656700. Its totient is φ = 11530781104.

The previous prime is 23120999959. The next prime is 23121000011. The reversal of 23121000002 is 20000012132.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 23088498601 + 32501401 = 151949^2 + 5701^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14858477 + ... + 14860032.

Almost surely, 2^23121000002 is an apocalyptic number.

23121000002 is a deficient number, since it is larger than the sum of its proper divisors (11649656698).

23121000002 is a wasteful number, since it uses less digits than its factorization.

23121000002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29718900.

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 23121000002 its reverse (20000012132), we get a palindrome (43121012134).

The spelling of 23121000002 in words is "twenty-three billion, one hundred twenty-one million, two", and thus it is an aban number.