21132212230 has 16 divisors (see below), whose sum is σ = 38060480304. Its totient is φ = 8447885280.

The previous prime is 21132212221. The next prime is 21132212267. The reversal of 21132212230 is 3221223112.

It is a junction number, because it is equal to n+sod(n) for n = 21132212198 and 21132212207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 607176 + ... + 641035.

It is an arithmetic number, because the mean of its divisors is an integer number (2378780019).

Almost surely, 2^21132212230 is an apocalyptic number.

21132212230 is a deficient number, since it is larger than the sum of its proper divisors (16928268074).

21132212230 is a wasteful number, since it uses less digits than its factorization.

21132212230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1249911.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21132212230 its reverse (3221223112), we get a palindrome (24353435342).

The spelling of 21132212230 in words is "twenty-one billion, one hundred thirty-two million, two hundred twelve thousand, two hundred thirty".