21132230302 has 8 divisors (see below), whose sum is σ = 31706128800. Its totient is φ = 10563520704.

The previous prime is 21132230299. The next prime is 21132230309. The reversal of 21132230302 is 20303223112.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21132230302² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21132230302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21132230309) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1287027 + ... + 1303342.

It is an arithmetic number, because the mean of its divisors is an integer number (3963266100).

Almost surely, 2^21132230302 is an apocalyptic number.

21132230302 is a deficient number, since it is larger than the sum of its proper divisors (10573898498).

21132230302 is a wasteful number, since it uses less digits than its factorization.

21132230302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594450.

The product of its (nonzero) digits is 432, while the sum is 19.

Adding to 21132230302 its reverse (20303223112), we get a palindrome (41435453414).

The spelling of 21132230302 in words is "twenty-one billion, one hundred thirty-two million, two hundred thirty thousand, three hundred two".