20221011233 has 6 divisors (see below), whose sum is σ = 21480451686. Its totient is φ = 19031539712.

The previous prime is 20221011227. The next prime is 20221011241. The reversal of 20221011233 is 33211012202.

It can be written as a sum of positive squares in 3 ways, for example, as 11945834209 + 8275177024 = 109297^2 + 90968^2 .

It is not a de Polignac number, because 20221011233 - 2²² = 20216816929 is a prime.

It is a super-2 number, since 2×20221011233² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20221011253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34984160 + ... + 34984737.

It is an arithmetic number, because the mean of its divisors is an integer number (3580075281).

Almost surely, 2^20221011233 is an apocalyptic number.

It is an amenable number.

20221011233 is a deficient number, since it is larger than the sum of its proper divisors (1259440453).

20221011233 is an equidigital number, since it uses as much as digits as its factorization.

20221011233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69968931 (or 69968914 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 20221011233 its reverse (33211012202), we get a palindrome (53432023435).

The spelling of 20221011233 in words is "twenty billion, two hundred twenty-one million, eleven thousand, two hundred thirty-three".