21432122202 has 32 divisors (see below), whose sum is σ = 44034584832. Its totient is φ = 6949088064.

The previous prime is 21432122143. The next prime is 21432122209. The reversal of 21432122202 is 20222123412.

It is a super-2 number, since 2×21432122202² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21432122209) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 986703 + ... + 1008189.

It is an arithmetic number, because the mean of its divisors is an integer number (1376080776).

Almost surely, 2^21432122202 is an apocalyptic number.

21432122202 is an abundant number, since it is smaller than the sum of its proper divisors (22602462630).

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

21432122202 is a wasteful number, since it uses less digits than its factorization.

21432122202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26022.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21432122202 its reverse (20222123412), we get a palindrome (41654245614).

The spelling of 21432122202 in words is "twenty-one billion, four hundred thirty-two million, one hundred twenty-two thousand, two hundred two".