21214036424224 has 48 divisors (see below), whose sum is σ = 48385439278848. Its totient is φ = 8967185644032.

The previous prime is 21214036424221. The next prime is 21214036424353. The reversal of 21214036424224 is 42242463041212.

It is not an unprimeable number, because it can be changed into a prime (21214036424221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 648651592 + ... + 648684295.

It is an arithmetic number, because the mean of its divisors is an integer number (1008029984976).

Almost surely, 2^{21214036424224} is an apocalyptic number.

It is an amenable number.

21214036424224 is an abundant number, since it is smaller than the sum of its proper divisors (27171402854624).

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

21214036424224 is a wasteful number, since it uses less digits than its factorization.

21214036424224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297335977 (or 1297335969 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 37.

Adding to 21214036424224 its reverse (42242463041212), we get a palindrome (63456499465436).

The spelling of 21214036424224 in words is "twenty-one trillion, two hundred fourteen billion, thirty-six million, four hundred twenty-four thousand, two hundred twenty-four".