20230020021 has 16 divisors (see below), whose sum is σ = 27926133248. Its totient is φ = 13012876800.

The previous prime is 20230020017. The next prime is 20230020049. The reversal of 20230020021 is 12002003202.

It is not a de Polignac number, because 20230020021 - 2² = 20230020017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20230019979 and 20230020006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20230020061) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 291400 + ... + 354081.

It is an arithmetic number, because the mean of its divisors is an integer number (1745383328).

Almost surely, 2^20230020021 is an apocalyptic number.

It is an amenable number.

20230020021 is a deficient number, since it is larger than the sum of its proper divisors (7696113227).

20230020021 is a wasteful number, since it uses less digits than its factorization.

20230020021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 645852.

The product of its (nonzero) digits is 48, while the sum is 12.

Adding to 20230020021 its reverse (12002003202), we get a palindrome (32232023223).

The spelling of 20230020021 in words is "twenty billion, two hundred thirty million, twenty thousand, twenty-one".