21043402241019 has 8 divisors (see below), whose sum is σ = 28057902477312. Its totient is φ = 14028918416040.

The previous prime is 21043402240933. The next prime is 21043402241053. The reversal of 21043402241019 is 91014220434012.

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

It is not a de Polignac number, because 21043402241019 - 2¹⁹ = 21043401716731 is a prime.

It is a super-2 number, since 2×21043402241019² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21043402241089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 710127 + ... + 6526184.

It is an arithmetic number, because the mean of its divisors is an integer number (3507237809664).

Almost surely, 2^{21043402241019} is an apocalyptic number.

21043402241019 is a deficient number, since it is larger than the sum of its proper divisors (7014500236293).

21043402241019 is an equidigital number, since it uses as much as digits as its factorization.

21043402241019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8205657.

The product of its (nonzero) digits is 13824, while the sum is 33.

The spelling of 21043402241019 in words is "twenty-one trillion, forty-three billion, four hundred two million, two hundred forty-one thousand, nineteen".