21423210022 has 8 divisors (see below), whose sum is σ = 33531980976. Its totient is φ = 10245883032.

The previous prime is 21423209993. The next prime is 21423210077. The reversal of 21423210022 is 22001232412.

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

It is a congruent number.

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, 232860933 + ... + 232861024.

It is an arithmetic number, because the mean of its divisors is an integer number (4191497622).

Almost surely, 2^21423210022 is an apocalyptic number.

21423210022 is a deficient number, since it is larger than the sum of its proper divisors (12108770954).

21423210022 is a wasteful number, since it uses less digits than its factorization.

21423210022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 465721982.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 21423210022 its reverse (22001232412), we get a palindrome (43424442434).

The spelling of 21423210022 in words is "twenty-one billion, four hundred twenty-three million, two hundred ten thousand, twenty-two".