21413122582 has 16 divisors (see below), whose sum is σ = 34339267872. Its totient is φ = 9978929280.

The previous prime is 21413122553. The next prime is 21413122583. The reversal of 21413122582 is 28522131412.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21413122583) 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, 3053769 + ... + 3060772.

It is an arithmetic number, because the mean of its divisors is an integer number (2146204242).

Almost surely, 2^21413122582 is an apocalyptic number.

21413122582 is a deficient number, since it is larger than the sum of its proper divisors (12926145290).

21413122582 is a wasteful number, since it uses less digits than its factorization.

21413122582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6114663.

The product of its digits is 7680, while the sum is 31.

Adding to 21413122582 its reverse (28522131412), we get a palindrome (49935253994).

The spelling of 21413122582 in words is "twenty-one billion, four hundred thirteen million, one hundred twenty-two thousand, five hundred eighty-two".