20221021233 has 12 divisors (see below), whose sum is σ = 33380733568. Its totient is φ = 11554869240.

The previous prime is 20221021193. The next prime is 20221021273. The reversal of 20221021233 is 33212012202.

20221021233 is a `hidden beast` number, since 202 + 210 + 21 + 233 = 666.

It is an interprime number because it is at equal distance from previous prime (20221021193) and next prime (20221021273).

It is not a de Polignac number, because 20221021233 - 2⁸ = 20221020977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20221021273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 160484233 + ... + 160484358.

Almost surely, 2^20221021233 is an apocalyptic number.

It is an amenable number.

20221021233 is a deficient number, since it is larger than the sum of its proper divisors (13159712335).

20221021233 is a wasteful number, since it uses less digits than its factorization.

20221021233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320968604 (or 320968601 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

Adding to 20221021233 its reverse (33212012202), we get a palindrome (53433033435).

The spelling of 20221021233 in words is "twenty billion, two hundred twenty-one million, twenty-one thousand, two hundred thirty-three".