21140221304102 has 16 divisors (see below), whose sum is σ = 32185015855872. Its totient is φ = 10411896365640.

The previous prime is 21140221304087. The next prime is 21140221304161. The reversal of 21140221304102 is 20140312204112.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 307274 + ... + 6509597.

It is an arithmetic number, because the mean of its divisors is an integer number (2011563490992).

Almost surely, 2^{21140221304102} is an apocalyptic number.

21140221304102 is a deficient number, since it is larger than the sum of its proper divisors (11044794551770).

21140221304102 is a wasteful number, since it uses less digits than its factorization.

21140221304102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6840083.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 21140221304102 its reverse (20140312204112), we get a palindrome (41280533508214).

The spelling of 21140221304102 in words is "twenty-one trillion, one hundred forty billion, two hundred twenty-one million, three hundred four thousand, one hundred two".