21131411104 has 24 divisors (see below), whose sum is σ = 41834892960. Its totient is φ = 10506676416.

The previous prime is 21131411083. The next prime is 21131411137. The reversal of 21131411104 is 40111413112.

It is an unprimeable number.

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, 1838844 + ... + 1850299.

It is an arithmetic number, because the mean of its divisors is an integer number (1743120540).

Almost surely, 2^21131411104 is an apocalyptic number.

It is an amenable number.

21131411104 is a deficient number, since it is larger than the sum of its proper divisors (20703481856).

21131411104 is a wasteful number, since it uses less digits than its factorization.

21131411104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3689332 (or 3689324 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 21131411104 its reverse (40111413112), we get a palindrome (61242824216).

The spelling of 21131411104 in words is "twenty-one billion, one hundred thirty-one million, four hundred eleven thousand, one hundred four".