21041013244215 has 32 divisors (see below), whose sum is σ = 34827290193600. Its totient is φ = 10834668185600.

The previous prime is 21041013244189. The next prime is 21041013244231. The reversal of 21041013244215 is 51244231014012.

It is not a de Polignac number, because 21041013244215 - 2⁵ = 21041013244183 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19618591 + ... + 20663279.

It is an arithmetic number, because the mean of its divisors is an integer number (1088352818550).

Almost surely, 2^{21041013244215} is an apocalyptic number.

21041013244215 is a deficient number, since it is larger than the sum of its proper divisors (13786276949385).

21041013244215 is a wasteful number, since it uses less digits than its factorization.

21041013244215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1091027.

The product of its (nonzero) digits is 7680, while the sum is 30.

Adding to 21041013244215 its reverse (51244231014012), we get a palindrome (72285244258227).

The spelling of 21041013244215 in words is "twenty-one trillion, forty-one billion, thirteen million, two hundred forty-four thousand, two hundred fifteen".