21214104244124 has 48 divisors (see below), whose sum is σ = 40521199090176. Its totient is φ = 9637645987200.

The previous prime is 21214104244063. The next prime is 21214104244139. The reversal of 21214104244124 is 42144240141212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1231150589 + ... + 1231167819.

It is an arithmetic number, because the mean of its divisors is an integer number (844191647712).

Almost surely, 2^{21214104244124} is an apocalyptic number.

It is an amenable number.

21214104244124 is a deficient number, since it is larger than the sum of its proper divisors (19307094846052).

21214104244124 is a wasteful number, since it uses less digits than its factorization.

21214104244124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30506 (or 30504 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

Adding to 21214104244124 its reverse (42144240141212), we get a palindrome (63358344385336).

The spelling of 21214104244124 in words is "twenty-one trillion, two hundred fourteen billion, one hundred four million, two hundred forty-four thousand, one hundred twenty-four".