21271222234 has 8 divisors (see below), whose sum is σ = 31908300768. Its totient is φ = 10635121980.

The previous prime is 21271222207. The next prime is 21271222249. The reversal of 21271222234 is 43222217212.

It is a happy number.

21271222234 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

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, 187552 + ... + 278779.

It is an arithmetic number, because the mean of its divisors is an integer number (3988537596).

Almost surely, 2^21271222234 is an apocalyptic number.

21271222234 is a deficient number, since it is larger than the sum of its proper divisors (10637078534).

21271222234 is a wasteful number, since it uses less digits than its factorization.

21271222234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489140.

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

Adding to 21271222234 its reverse (43222217212), we get a palindrome (64493439446).

The spelling of 21271222234 in words is "twenty-one billion, two hundred seventy-one million, two hundred twenty-two thousand, two hundred thirty-four".