21230033022 has 96 divisors (see below), whose sum is σ = 52422080256. Its totient is φ = 6146553600.

The previous prime is 21230033009. The next prime is 21230033023. The reversal of 21230033022 is 22033003212.

It is a happy number.

21230033022 is a `hidden beast` number, since 2 + 12 + 300 + 330 + 22 = 666.

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 = 21230032986 and 21230033004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21230033023) 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, 4966278 + ... + 4970550.

It is an arithmetic number, because the mean of its divisors is an integer number (546063336).

Almost surely, 2^21230033022 is an apocalyptic number.

21230033022 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 21230033022, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26211040128).

21230033022 is an abundant number, since it is smaller than the sum of its proper divisors (31192047234).

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

21230033022 is a wasteful number, since it uses less digits than its factorization.

21230033022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5406 (or 5403 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

Adding to 21230033022 its reverse (22033003212), we get a palindrome (43263036234).

The spelling of 21230033022 in words is "twenty-one billion, two hundred thirty million, thirty-three thousand, twenty-two".