21242420242214 has 16 divisors (see below), whose sum is σ = 32419327552560. Its totient is φ = 10437442012800.

The previous prime is 21242420242207. The next prime is 21242420242301. The reversal of 21242420242214 is 41224202424212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 366042887 + ... + 366100914.

It is an arithmetic number, because the mean of its divisors is an integer number (2026207972035).

Almost surely, 2^{21242420242214} is an apocalyptic number.

21242420242214 is a deficient number, since it is larger than the sum of its proper divisors (11176907310346).

21242420242214 is a wasteful number, since it uses less digits than its factorization.

21242420242214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732144055.

The product of its (nonzero) digits is 32768, while the sum is 32.

Adding to 21242420242214 its reverse (41224202424212), we get a palindrome (62466622666426).

The spelling of 21242420242214 in words is "twenty-one trillion, two hundred forty-two billion, four hundred twenty million, two hundred forty-two thousand, two hundred fourteen".