20121330023 has 4 divisors (see below), whose sum is σ = 20126065368. Its totient is φ = 20116594680.

The previous prime is 20121330017. The next prime is 20121330059. The reversal of 20121330023 is 32003312102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20121330023 - 2³⁴ = 2941460839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20121329983 and 20121330010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20121330013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2361293 + ... + 2369798.

It is an arithmetic number, because the mean of its divisors is an integer number (5031516342).

Almost surely, 2^20121330023 is an apocalyptic number.

20121330023 is a deficient number, since it is larger than the sum of its proper divisors (4735345).

20121330023 is an equidigital number, since it uses as much as digits as its factorization.

20121330023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4735344.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 20121330023 its reverse (32003312102), we get a palindrome (52124642125).

The spelling of 20121330023 in words is "twenty billion, one hundred twenty-one million, three hundred thirty thousand, twenty-three".