21214024355042 has 8 divisors (see below), whose sum is σ = 31862851300332. Its totient is φ = 10593073921600.

The previous prime is 21214024355039. The next prime is 21214024355053. The reversal of 21214024355042 is 24055342041212.

It can be written as a sum of positive squares in 2 ways, for example, as 17913810765841 + 3300213589201 = 4232471^2 + 1816649^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 21214024354993 and 21214024355011.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6969126059 + ... + 6969129102.

Almost surely, 2^{21214024355042} is an apocalyptic number.

21214024355042 is a deficient number, since it is larger than the sum of its proper divisors (10648826945290).

21214024355042 is a wasteful number, since it uses less digits than its factorization.

21214024355042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13938255924.

The product of its (nonzero) digits is 76800, while the sum is 35.

Adding to 21214024355042 its reverse (24055342041212), we get a palindrome (45269366396254).

The spelling of 21214024355042 in words is "twenty-one trillion, two hundred fourteen billion, twenty-four million, three hundred fifty-five thousand, forty-two".