21140441034442 has 24 divisors (see below), whose sum is σ = 32240959316748. Its totient is φ = 10396316200320.

The previous prime is 21140441034431. The next prime is 21140441034451. The reversal of 21140441034442 is 24443014404112.

It can be written as a sum of positive squares in 6 ways, for example, as 510940469601 + 20629500564841 = 714801^2 + 4541971^2 .

It is a junction number, because it is equal to n+sod(n) for n = 21140441034398 and 21140441034407.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139781928 + ... + 139933084.

Almost surely, 2^{21140441034442} is an apocalyptic number.

21140441034442 is a deficient number, since it is larger than the sum of its proper divisors (11100518282306).

21140441034442 is a wasteful number, since it uses less digits than its factorization.

21140441034442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170074 (or 170013 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 34.

Adding to 21140441034442 its reverse (24443014404112), we get a palindrome (45583455438554).

The spelling of 21140441034442 in words is "twenty-one trillion, one hundred forty billion, four hundred forty-one million, thirty-four thousand, four hundred forty-two".