21112121113214 has 8 divisors (see below), whose sum is σ = 31702641065040. Its totient is φ = 10544574091536.

The previous prime is 21112121113183. The next prime is 21112121113217. The reversal of 21112121113214 is 41231112121112.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 21112121113214.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21112121113217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5743230239 + ... + 5743233914.

It is an arithmetic number, because the mean of its divisors is an integer number (3962830133130).

Almost surely, 2^{21112121113214} is an apocalyptic number.

21112121113214 is a deficient number, since it is larger than the sum of its proper divisors (10590519951826).

21112121113214 is a wasteful number, since it uses less digits than its factorization.

21112121113214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11486465074.

The product of its digits is 192, while the sum is 23.

Adding to 21112121113214 its reverse (41231112121112), we get a palindrome (62343233234326).

The spelling of 21112121113214 in words is "twenty-one trillion, one hundred twelve billion, one hundred twenty-one million, one hundred thirteen thousand, two hundred fourteen".