21131415411 has 8 divisors (see below), whose sum is σ = 28207872000. Its totient is φ = 14071284552.

The previous prime is 21131415377. The next prime is 21131415427. The reversal of 21131415411 is 11451413112.

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

It is not a de Polignac number, because 21131415411 - 2¹⁰ = 21131414387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21131415491) 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, 4078411 + ... + 4083588.

It is an arithmetic number, because the mean of its divisors is an integer number (3525984000).

Almost surely, 2^21131415411 is an apocalyptic number.

21131415411 is a deficient number, since it is larger than the sum of its proper divisors (7076456589).

21131415411 is an equidigital number, since it uses as much as digits as its factorization.

21131415411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8162865.

The product of its digits is 480, while the sum is 24.

Adding to 21131415411 its reverse (11451413112), we get a palindrome (32582828523).

The spelling of 21131415411 in words is "twenty-one billion, one hundred thirty-one million, four hundred fifteen thousand, four hundred eleven".