21311177114 has 8 divisors (see below), whose sum is σ = 33356625120. Its totient is φ = 10192302076.

The previous prime is 21311177089. The next prime is 21311177117. The reversal of 21311177114 is 41177111312.

It is a happy number.

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

It is not an unprimeable number, because it can be changed into a prime (21311177117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 231643184 + ... + 231643275.

It is an arithmetic number, because the mean of its divisors is an integer number (4169578140).

Almost surely, 2^21311177114 is an apocalyptic number.

21311177114 is a deficient number, since it is larger than the sum of its proper divisors (12045448006).

21311177114 is a wasteful number, since it uses less digits than its factorization.

21311177114 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463286484.

The product of its digits is 1176, while the sum is 29.

Adding to 21311177114 its reverse (41177111312), we get a palindrome (62488288426).

The spelling of 21311177114 in words is "twenty-one billion, three hundred eleven million, one hundred seventy-seven thousand, one hundred fourteen".