21114203214 has 64 divisors (see below), whose sum is σ = 46044101376. Its totient is φ = 6416008704.

The previous prime is 21114203213. The next prime is 21114203221. The reversal of 21114203214 is 41230241112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21114203213) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2808849 + ... + 2816355.

It is an arithmetic number, because the mean of its divisors is an integer number (719439084).

Almost surely, 2^21114203214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21114203214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23022050688).

21114203214 is an abundant number, since it is smaller than the sum of its proper divisors (24929898162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21114203214 is a wasteful number, since it uses less digits than its factorization.

21114203214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7969.

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 21114203214 its reverse (41230241112), we get a palindrome (62344444326).

The spelling of 21114203214 in words is "twenty-one billion, one hundred fourteen million, two hundred three thousand, two hundred fourteen".