21001412423602 has 16 divisors (see below), whose sum is σ = 33970532141952. Its totient is φ = 9680052834000.

The previous prime is 21001412423599. The next prime is 21001412423711. The reversal of 21001412423602 is 20632421410012.

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, 537761188 + ... + 537800239.

It is an arithmetic number, because the mean of its divisors is an integer number (2123158258872).

Almost surely, 2^{21001412423602} is an apocalyptic number.

21001412423602 is a deficient number, since it is larger than the sum of its proper divisors (12969119718350).

21001412423602 is a wasteful number, since it uses less digits than its factorization.

21001412423602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1075562193.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 21001412423602 its reverse (20632421410012), we get a palindrome (41633833833614).

The spelling of 21001412423602 in words is "twenty-one trillion, one billion, four hundred twelve million, four hundred twenty-three thousand, six hundred two".