21214113104 has 10 divisors (see below), whose sum is σ = 41102344170. Its totient is φ = 10607056544.

The previous prime is 21214113071. The next prime is 21214113127. The reversal of 21214113104 is 40131141212.

It can be written as a sum of positive squares in only one way, i.e., 20586510400 + 627602704 = 143480^2 + 25052^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662941019 + ... + 662941050.

It is an arithmetic number, because the mean of its divisors is an integer number (4110234417).

Almost surely, 2^21214113104 is an apocalyptic number.

It is an amenable number.

21214113104 is a deficient number, since it is larger than the sum of its proper divisors (19888231066).

21214113104 is a wasteful number, since it uses less digits than its factorization.

21214113104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1325882077 (or 1325882071 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 20.

Adding to 21214113104 its reverse (40131141212), we get a palindrome (61345254316).

The spelling of 21214113104 in words is "twenty-one billion, two hundred fourteen million, one hundred thirteen thousand, one hundred four".