21230221022 has 8 divisors (see below), whose sum is σ = 31890762072. Its totient is φ = 10599967000.

The previous prime is 21230221013. The next prime is 21230221037. The reversal of 21230221022 is 22012203212.

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, 7570004 + ... + 7572807.

It is an arithmetic number, because the mean of its divisors is an integer number (3986345259).

Almost surely, 2^21230221022 is an apocalyptic number.

21230221022 is a deficient number, since it is larger than the sum of its proper divisors (10660541050).

21230221022 is a wasteful number, since it uses less digits than its factorization.

21230221022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15143514.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21230221022 its reverse (22012203212), we get a palindrome (43242424234).

The spelling of 21230221022 in words is "twenty-one billion, two hundred thirty million, two hundred twenty-one thousand, twenty-two".