20023122013 has 16 divisors (see below), whose sum is σ = 21510195840. Its totient is φ = 18582782400.

The previous prime is 20023121999. The next prime is 20023122017. The reversal of 20023122013 is 31022132002.

It is a cyclic number.

It is not a de Polignac number, because 20023122013 - 2²⁹ = 19486251101 is a prime.

It is a super-3 number, since 3×20023122013³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20023122017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 164523 + ... + 259063.

It is an arithmetic number, because the mean of its divisors is an integer number (1344387240).

Almost surely, 2^20023122013 is an apocalyptic number.

It is an amenable number.

20023122013 is a deficient number, since it is larger than the sum of its proper divisors (1487073827).

20023122013 is a wasteful number, since it uses less digits than its factorization.

20023122013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94788.

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 20023122013 its reverse (31022132002), we get a palindrome (51045254015).

The spelling of 20023122013 in words is "twenty billion, twenty-three million, one hundred twenty-two thousand, thirteen".