21227423122 has 8 divisors (see below), whose sum is σ = 31842558000. Its totient is φ = 10613237124.

The previous prime is 21227423117. The next prime is 21227423141. The reversal of 21227423122 is 22132472212.

It is a happy number.

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

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, 178372 + ... + 272527.

It is an arithmetic number, because the mean of its divisors is an integer number (3980319750).

Almost surely, 2^21227423122 is an apocalyptic number.

21227423122 is a deficient number, since it is larger than the sum of its proper divisors (10615134878).

21227423122 is a wasteful number, since it uses less digits than its factorization.

21227423122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 474440.

The product of its digits is 5376, while the sum is 28.

Adding to 21227423122 its reverse (22132472212), we get a palindrome (43359895334).

The spelling of 21227423122 in words is "twenty-one billion, two hundred twenty-seven million, four hundred twenty-three thousand, one hundred twenty-two".