20221333331 has 4 divisors (see below), whose sum is σ = 20301896664. Its totient is φ = 20140770000.

The previous prime is 20221333289. The next prime is 20221333369. The reversal of 20221333331 is 13333312202.

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 20221333331 - 2³⁴ = 3041464147 is a prime.

It is a super-2 number, since 2×20221333331² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20221333297 and 20221333306.

It is not an unprimeable number, because it can be changed into a prime (20221333631) 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, 40281290 + ... + 40281791.

It is an arithmetic number, because the mean of its divisors is an integer number (5075474166).

Almost surely, 2^20221333331 is an apocalyptic number.

20221333331 is a deficient number, since it is larger than the sum of its proper divisors (80563333).

20221333331 is an equidigital number, since it uses as much as digits as its factorization.

20221333331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80563332.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 20221333331 its reverse (13333312202), we get a palindrome (33554645533).

The spelling of 20221333331 in words is "twenty billion, two hundred twenty-one million, three hundred thirty-three thousand, three hundred thirty-one".