21311114415 has 32 divisors (see below), whose sum is σ = 34340560320. Its totient is φ = 11285277696.

The previous prime is 21311114401. The next prime is 21311114441. The reversal of 21311114415 is 51441111312.

It is not a de Polignac number, because 21311114415 - 2⁸ = 21311114159 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, 1272939 + ... + 1289571.

It is an arithmetic number, because the mean of its divisors is an integer number (1073142510).

Almost surely, 2^21311114415 is an apocalyptic number.

21311114415 is a deficient number, since it is larger than the sum of its proper divisors (13029445905).

21311114415 is a wasteful number, since it uses less digits than its factorization.

21311114415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17243.

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

Adding to 21311114415 its reverse (51441111312), we get a palindrome (72752225727).

The spelling of 21311114415 in words is "twenty-one billion, three hundred eleven million, one hundred fourteen thousand, four hundred fifteen".