21243320114 has 16 divisors (see below), whose sum is σ = 32342522400. Its totient is φ = 10463589024.

The previous prime is 21243320083. The next prime is 21243320117. The reversal of 21243320114 is 41102334212.

It is a self number, because there is not a number n which added to its sum of digits gives 21243320114.

It is not an unprimeable number, because it can be changed into a prime (21243320117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238979 + ... + 315590.

It is an arithmetic number, because the mean of its divisors is an integer number (2021407650).

Almost surely, 2^21243320114 is an apocalyptic number.

21243320114 is a deficient number, since it is larger than the sum of its proper divisors (11099202286).

21243320114 is a wasteful number, since it uses less digits than its factorization.

21243320114 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 554857.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 21243320114 its reverse (41102334212), we get a palindrome (62345654326).

The spelling of 21243320114 in words is "twenty-one billion, two hundred forty-three million, three hundred twenty thousand, one hundred fourteen".