21412213242 has 32 divisors (see below), whose sum is σ = 50264967552. Its totient is φ = 5952429504.

The previous prime is 21412213187. The next prime is 21412213283. The reversal of 21412213242 is 24231221412.

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 15 ways as a sum of consecutive naturals, for example, 6887833 + ... + 6890940.

It is an arithmetic number, because the mean of its divisors is an integer number (1570780236).

Almost surely, 2^21412213242 is an apocalyptic number.

21412213242 is an abundant number, since it is smaller than the sum of its proper divisors (28852754310).

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

21412213242 is a wasteful number, since it uses less digits than its factorization.

21412213242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13778822.

The product of its digits is 1536, while the sum is 24.

Adding to 21412213242 its reverse (24231221412), we get a palindrome (45643434654).

The spelling of 21412213242 in words is "twenty-one billion, four hundred twelve million, two hundred thirteen thousand, two hundred forty-two".