21041140115 has 8 divisors (see below), whose sum is σ = 25252109808. Its totient is φ = 16831084320.

The previous prime is 21041140111. The next prime is 21041140129. The reversal of 21041140115 is 51104114012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 21041140115 - 2² = 21041140111 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21041140111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 176756 + ... + 270785.

It is an arithmetic number, because the mean of its divisors is an integer number (3156513726).

Almost surely, 2^21041140115 is an apocalyptic number.

21041140115 is a deficient number, since it is larger than the sum of its proper divisors (4210969693).

21041140115 is an equidigital number, since it uses as much as digits as its factorization.

21041140115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 456949.

The product of its (nonzero) digits is 160, while the sum is 20.

Adding to 21041140115 its reverse (51104114012), we get a palindrome (72145254127).

The spelling of 21041140115 in words is "twenty-one billion, forty-one million, one hundred forty thousand, one hundred fifteen".