21411104242 has 32 divisors (see below), whose sum is σ = 36182016000. Its totient is φ = 9414349200.

The previous prime is 21411104207. The next prime is 21411104261. The reversal of 21411104242 is 24240111412.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 2053759 + ... + 2064157.

It is an arithmetic number, because the mean of its divisors is an integer number (1130688000).

Almost surely, 2^21411104242 is an apocalyptic number.

21411104242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21411104242 is a deficient number, since it is larger than the sum of its proper divisors (14770911758).

21411104242 is a wasteful number, since it uses less digits than its factorization.

21411104242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13462.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 21411104242 its reverse (24240111412), we get a palindrome (45651215654).

The spelling of 21411104242 in words is "twenty-one billion, four hundred eleven million, one hundred four thousand, two hundred forty-two".