21114214424 has 8 divisors (see below), whose sum is σ = 39589152060. Its totient is φ = 10557107208.

The previous prime is 21114214409. The next prime is 21114214441. The reversal of 21114214424 is 42441241112.

It is a tau number, because it is divible by the number of its divisors (8).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 21114214393 and 21114214402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1319638394 + ... + 1319638409.

Almost surely, 2^21114214424 is an apocalyptic number.

It is an amenable number.

21114214424 is a deficient number, since it is larger than the sum of its proper divisors (18474937636).

21114214424 is a wasteful number, since it uses less digits than its factorization.

21114214424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2639276809 (or 2639276805 counting only the distinct ones).

The product of its digits is 2048, while the sum is 26.

Adding to 21114214424 its reverse (42441241112), we get a palindrome (63555455536).

The spelling of 21114214424 in words is "twenty-one billion, one hundred fourteen million, two hundred fourteen thousand, four hundred twenty-four".