21030132222 has 112 divisors (see below), whose sum is σ = 53261452800. Its totient is φ = 6167048400.

The previous prime is 21030132199. The next prime is 21030132229. The reversal of 21030132222 is 22223103012.

21030132222 is a `hidden beast` number, since 21 + 0 + 301 + 322 + 22 = 666.

It is a super-2 number, since 2×21030132222² (a number of 21 digits) contains 22 as substring.

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 = 21030132195 and 21030132204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21030132229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 476029 + ... + 518327.

Almost surely, 2^21030132222 is an apocalyptic number.

21030132222 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 21030132222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26630726400).

21030132222 is an abundant number, since it is smaller than the sum of its proper divisors (32231320578).

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

21030132222 is a wasteful number, since it uses less digits than its factorization.

21030132222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42361 (or 42346 counting only the distinct ones).

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

Adding to 21030132222 its reverse (22223103012), we get a palindrome (43253235234).

The spelling of 21030132222 in words is "twenty-one billion, thirty million, one hundred thirty-two thousand, two hundred twenty-two".