21214002124 has 24 divisors (see below), whose sum is σ = 42455168000. Its totient is φ = 9085894416.

The previous prime is 21214002107. The next prime is 21214002163. The reversal of 21214002124 is 42120041212.

It is a super-2 number, since 2×21214002124² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 197874 + ... + 285625.

Almost surely, 2^21214002124 is an apocalyptic number.

It is an amenable number.

21214002124 is an abundant number, since it is smaller than the sum of its proper divisors (21241165876).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21214002124 is a wasteful number, since it uses less digits than its factorization.

21214002124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485077 (or 485075 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21214002124 its reverse (42120041212), we get a palindrome (63334043336).

The spelling of 21214002124 in words is "twenty-one billion, two hundred fourteen million, two thousand, one hundred twenty-four".