20021032023 has 4 divisors (see below), whose sum is σ = 26694709368. Its totient is φ = 13347354680.

The previous prime is 20021031949. The next prime is 20021032027. The reversal of 20021032023 is 32023012002.

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 20021032023 - 2¹² = 20021027927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20021031993 and 20021032011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20021032027) 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 3 ways as a sum of consecutive naturals, for example, 3336838668 + ... + 3336838673.

It is an arithmetic number, because the mean of its divisors is an integer number (6673677342).

Almost surely, 2^20021032023 is an apocalyptic number.

20021032023 is a deficient number, since it is larger than the sum of its proper divisors (6673677345).

20021032023 is an equidigital number, since it uses as much as digits as its factorization.

20021032023 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6673677344.

The product of its (nonzero) digits is 144, while the sum is 15.

Adding to 20021032023 its reverse (32023012002), we get a palindrome (52044044025).

The spelling of 20021032023 in words is "twenty billion, twenty-one million, thirty-two thousand, twenty-three".