21224014022 has 4 divisors (see below), whose sum is σ = 31836021036. Its totient is φ = 10612007010.

The previous prime is 21224014013. The next prime is 21224014051. The reversal of 21224014022 is 22041042212.

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

It is a junction number, because it is equal to n+sod(n) for n = 21224013985 and 21224014003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5306003504 + ... + 5306003507.

It is an arithmetic number, because the mean of its divisors is an integer number (7959005259).

Almost surely, 2^21224014022 is an apocalyptic number.

21224014022 is a deficient number, since it is larger than the sum of its proper divisors (10612007014).

21224014022 is a wasteful number, since it uses less digits than its factorization.

21224014022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10612007013.

The product of its (nonzero) digits is 512, while the sum is 20.

Adding to 21224014022 its reverse (22041042212), we get a palindrome (43265056234).

The spelling of 21224014022 in words is "twenty-one billion, two hundred twenty-four million, fourteen thousand, twenty-two".