21422230002 has 16 divisors (see below), whose sum is σ = 47604955680. Its totient is φ = 7140743316.

The previous prime is 21422230001. The next prime is 21422230019. The reversal of 21422230002 is 20003222412.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (21422230001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 198353928 + ... + 198354035.

It is an arithmetic number, because the mean of its divisors is an integer number (2975309730).

Almost surely, 2^21422230002 is an apocalyptic number.

21422230002 is an abundant number, since it is smaller than the sum of its proper divisors (26182725678).

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

21422230002 is a wasteful number, since it uses less digits than its factorization.

21422230002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 396707974 (or 396707968 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

Adding to 21422230002 its reverse (20003222412), we get a palindrome (41425452414).

The spelling of 21422230002 in words is "twenty-one billion, four hundred twenty-two million, two hundred thirty thousand, two".