20023012303121 has 4 divisors (see below), whose sum is σ = 20023150034544. Its totient is φ = 20022874571700.

The previous prime is 20023012303093. The next prime is 20023012303201. The reversal of 20023012303121 is 12130321032002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20023012303121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20023012303093 and 20023012303102.

It is not an unprimeable number, because it can be changed into a prime (20023012003121) 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, 68647415 + ... + 68938476.

It is an arithmetic number, because the mean of its divisors is an integer number (5005787508636).

Almost surely, 2^{20023012303121} is an apocalyptic number.

It is an amenable number.

20023012303121 is a deficient number, since it is larger than the sum of its proper divisors (137731423).

20023012303121 is a wasteful number, since it uses less digits than its factorization.

20023012303121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137731422.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 20023012303121 its reverse (12130321032002), we get a palindrome (32153333335123).

The spelling of 20023012303121 in words is "twenty trillion, twenty-three billion, twelve million, three hundred three thousand, one hundred twenty-one".