21103344189443 has 2 divisors, whose sum is σ = 21103344189444. Its totient is φ = 21103344189442.

The previous prime is 21103344189373. The next prime is 21103344189451. The reversal of 21103344189443 is 34498144330112.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 21103344189443 - 2¹⁰ = 21103344188419 is a prime.

It is a super-2 number, since 2×21103344189443² (a number of 27 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (21103344189743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10551672094721 + 10551672094722.

It is an arithmetic number, because the mean of its divisors is an integer number (10551672094722).

Almost surely, 2^{21103344189443} is an apocalyptic number.

21103344189443 is a deficient number, since it is larger than the sum of its proper divisors (1).

21103344189443 is an equidigital number, since it uses as much as digits as its factorization.

21103344189443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 995328, while the sum is 47.

The spelling of 21103344189443 in words is "twenty-one trillion, one hundred three billion, three hundred forty-four million, one hundred eighty-nine thousand, four hundred forty-three".