21214062430340 has 96 divisors (see below), whose sum is σ = 48088136648160. Its totient is φ = 7814656106496.

The previous prime is 21214062430307. The next prime is 21214062430387. The reversal of 21214062430340 is 4303426041212.

It can be written as a sum of positive squares in 16 ways, for example, as 12777035952004 + 8437026478336 = 3574498^2 + 2904656^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21214062430297 and 21214062430306.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 383361314 + ... + 383416646.

It is an arithmetic number, because the mean of its divisors is an integer number (500918090085).

Almost surely, 2^{21214062430340} is an apocalyptic number.

21214062430340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21214062430340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24044068324080).

21214062430340 is an abundant number, since it is smaller than the sum of its proper divisors (26874074217820).

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

21214062430340 is a wasteful number, since it uses less digits than its factorization.

21214062430340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58761 (or 58759 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 21214062430340 its reverse (4303426041212), we get a palindrome (25517488471552).

The spelling of 21214062430340 in words is "twenty-one trillion, two hundred fourteen billion, sixty-two million, four hundred thirty thousand, three hundred forty".