21102221014 has 16 divisors (see below), whose sum is σ = 36182321568. Its totient is φ = 9042037632.

The previous prime is 21102221011. The next prime is 21102221029. The reversal of 21102221014 is 41012220112.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21102221011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72259 + ... + 217774.

It is an arithmetic number, because the mean of its divisors is an integer number (2261395098).

Almost surely, 2^21102221014 is an apocalyptic number.

21102221014 is a deficient number, since it is larger than the sum of its proper divisors (15080100554).

21102221014 is a wasteful number, since it uses less digits than its factorization.

21102221014 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295239.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21102221014 its reverse (41012220112), we get a palindrome (62114441126).

The spelling of 21102221014 in words is "twenty-one billion, one hundred two million, two hundred twenty-one thousand, fourteen".