21133022022 has 96 divisors (see below), whose sum is σ = 52896587328. Its totient is φ = 5972779008.

The previous prime is 21133022021. The next prime is 21133022039. The reversal of 21133022022 is 22022033112.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 21133021986 and 21133022004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21133022021) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9296278 + ... + 9298550.

It is an arithmetic number, because the mean of its divisors is an integer number (551006118).

Almost surely, 2^21133022022 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21133022022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26448293664).

21133022022 is an abundant number, since it is smaller than the sum of its proper divisors (31763565306).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21133022022 is a wasteful number, since it uses less digits than its factorization.

21133022022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3054 (or 3051 counting only the distinct ones).

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

Adding to 21133022022 its reverse (22022033112), we get a palindrome (43155055134).

The spelling of 21133022022 in words is "twenty-one billion, one hundred thirty-three million, twenty-two thousand, twenty-two".