21223132130 has 8 divisors (see below), whose sum is σ = 38201637852. Its totient is φ = 8489252848.

The previous prime is 21223132123. The next prime is 21223132153. The reversal of 21223132130 is 3123132212.

It can be written as a sum of positive squares in 2 ways, for example, as 20811813169 + 411318961 = 144263^2 + 20281^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1061156597 + ... + 1061156616.

Almost surely, 2^21223132130 is an apocalyptic number.

21223132130 is a deficient number, since it is larger than the sum of its proper divisors (16978505722).

21223132130 is a wasteful number, since it uses less digits than its factorization.

21223132130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2122313220.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 21223132130 its reverse (3123132212), we get a palindrome (24346264342).

The spelling of 21223132130 in words is "twenty-one billion, two hundred twenty-three million, one hundred thirty-two thousand, one hundred thirty".