21230230022 has 4 divisors (see below), whose sum is σ = 31845345036. Its totient is φ = 10615115010.

The previous prime is 21230230009. The next prime is 21230230033. The reversal of 21230230022 is 22003203212.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5307557504 + ... + 5307557507.

It is an arithmetic number, because the mean of its divisors is an integer number (7961336259).

Almost surely, 2^21230230022 is an apocalyptic number.

21230230022 is a deficient number, since it is larger than the sum of its proper divisors (10615115014).

21230230022 is a wasteful number, since it uses less digits than its factorization.

21230230022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10615115013.

The product of its (nonzero) digits is 288, while the sum is 17.

Adding to 21230230022 its reverse (22003203212), we get a palindrome (43233433234).

The spelling of 21230230022 in words is "twenty-one billion, two hundred thirty million, two hundred thirty thousand, twenty-two".