20002233021 has 4 divisors (see below), whose sum is σ = 26669644032. Its totient is φ = 13334822012.

The previous prime is 20002232993. The next prime is 20002233047. The reversal of 20002233021 is 12033220002.

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 not a de Polignac number, because 20002233021 - 2¹⁷ = 20002101949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002233421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3333705501 + ... + 3333705506.

It is an arithmetic number, because the mean of its divisors is an integer number (6667411008).

Almost surely, 2^20002233021 is an apocalyptic number.

It is an amenable number.

20002233021 is a deficient number, since it is larger than the sum of its proper divisors (6667411011).

20002233021 is an equidigital number, since it uses as much as digits as its factorization.

20002233021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6667411010.

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

Adding to 20002233021 its reverse (12033220002), we get a palindrome (32035453023).

The spelling of 20002233021 in words is "twenty billion, two million, two hundred thirty-three thousand, twenty-one".