21411244442 has 8 divisors (see below), whose sum is σ = 36704990496. Its totient is φ = 9176247612.

The previous prime is 21411244429. The next prime is 21411244451. The reversal of 21411244442 is 24444211412.

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

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 3 ways as a sum of consecutive naturals, for example, 764687288 + ... + 764687315.

It is an arithmetic number, because the mean of its divisors is an integer number (4588123812).

Almost surely, 2^21411244442 is an apocalyptic number.

21411244442 is a deficient number, since it is larger than the sum of its proper divisors (15293746054).

21411244442 is a wasteful number, since it uses less digits than its factorization.

21411244442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1529374612.

The product of its digits is 8192, while the sum is 29.

Adding to 21411244442 its reverse (24444211412), we get a palindrome (45855455854).

The spelling of 21411244442 in words is "twenty-one billion, four hundred eleven million, two hundred forty-four thousand, four hundred forty-two".