20221220333 has 8 divisors (see below), whose sum is σ = 21631434552. Its totient is φ = 18835531776.

The previous prime is 20221220329. The next prime is 20221220419. The reversal of 20221220333 is 33302212202.

It can be written as a sum of positive squares in 4 ways, for example, as 4722713284 + 15498507049 = 68722^2 + 124493^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20221220333 - 2² = 20221220329 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20221220303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6129710 + ... + 6133007.

It is an arithmetic number, because the mean of its divisors is an integer number (2703929319).

Almost surely, 2^20221220333 is an apocalyptic number.

It is an amenable number.

20221220333 is a deficient number, since it is larger than the sum of its proper divisors (1410214219).

20221220333 is a wasteful number, since it uses less digits than its factorization.

20221220333 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12262831.

The product of its (nonzero) digits is 864, while the sum is 20.

Adding to 20221220333 its reverse (33302212202), we get a palindrome (53523432535).

The spelling of 20221220333 in words is "twenty billion, two hundred twenty-one million, two hundred twenty thousand, three hundred thirty-three".