21022002130 has 8 divisors (see below), whose sum is σ = 37839603852. Its totient is φ = 8408800848.

The previous prime is 21022002109. The next prime is 21022002143. The reversal of 21022002130 is 3120022012.

It can be written as a sum of positive squares in 2 ways, for example, as 20624119321 + 397882809 = 143611^2 + 19947^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 21022002130.

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, 1051100097 + ... + 1051100116.

Almost surely, 2^21022002130 is an apocalyptic number.

21022002130 is a deficient number, since it is larger than the sum of its proper divisors (16817601722).

21022002130 is a wasteful number, since it uses less digits than its factorization.

21022002130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2102200220.

The product of its (nonzero) digits is 48, while the sum is 13.

Adding to 21022002130 its reverse (3120022012), we get a palindrome (24142024142).

The spelling of 21022002130 in words is "twenty-one billion, twenty-two million, two thousand, one hundred thirty".