21214024314531 has 8 divisors (see below), whose sum is σ = 28289730130704. Its totient is φ = 14140500687360.

The previous prime is 21214024314529. The next prime is 21214024314533. The reversal of 21214024314531 is 13541342041212.

It is an interprime number because it is at equal distance from previous prime (21214024314529) and next prime (21214024314533).

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

It is not a de Polignac number, because 21214024314531 - 2¹ = 21214024314529 is a prime.

It is a super-2 number, since 2×21214024314531² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21214024314492 and 21214024314501.

It is not an unprimeable number, because it can be changed into a prime (21214024314533) 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, 545524566 + ... + 545563451.

It is an arithmetic number, because the mean of its divisors is an integer number (3536216266338).

Almost surely, 2^{21214024314531} is an apocalyptic number.

21214024314531 is a deficient number, since it is larger than the sum of its proper divisors (7075705816173).

21214024314531 is a wasteful number, since it uses less digits than its factorization.

21214024314531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1091094501.

The product of its (nonzero) digits is 23040, while the sum is 33.

Adding to 21214024314531 its reverse (13541342041212), we get a palindrome (34755366355743).

The spelling of 21214024314531 in words is "twenty-one trillion, two hundred fourteen billion, twenty-four million, three hundred fourteen thousand, five hundred thirty-one".