21223121314 has 16 divisors (see below), whose sum is σ = 32381213760. Its totient is φ = 10430895600.

The previous prime is 21223121233. The next prime is 21223121333. The reversal of 21223121314 is 41312132212.

It is a super-2 number, since 2×21223121314² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349854 + ... + 406009.

It is an arithmetic number, because the mean of its divisors is an integer number (2023825860).

Almost surely, 2^21223121314 is an apocalyptic number.

21223121314 is a deficient number, since it is larger than the sum of its proper divisors (11158092446).

21223121314 is a wasteful number, since it uses less digits than its factorization.

21223121314 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 756105.

The product of its digits is 576, while the sum is 22.

Adding to 21223121314 its reverse (41312132212), we get a palindrome (62535253526).

The spelling of 21223121314 in words is "twenty-one billion, two hundred twenty-three million, one hundred twenty-one thousand, three hundred fourteen".