21420223114 has 8 divisors (see below), whose sum is σ = 32131186308. Its totient is φ = 10709827680.

The previous prime is 21420223087. The next prime is 21420223133. The reversal of 21420223114 is 41132202412.

It can be written as a sum of positive squares in 2 ways, for example, as 21370054225 + 50168889 = 146185^2 + 7083^2 .

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, 29947 + ... + 209134.

Almost surely, 2^21420223114 is an apocalyptic number.

21420223114 is a deficient number, since it is larger than the sum of its proper divisors (10710963194).

21420223114 is a wasteful number, since it uses less digits than its factorization.

21420223114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283880.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21420223114 its reverse (41132202412), we get a palindrome (62552425526).

The spelling of 21420223114 in words is "twenty-one billion, four hundred twenty million, two hundred twenty-three thousand, one hundred fourteen".