21044020312141 has 8 divisors (see below), whose sum is σ = 22825364930424. Its totient is φ = 19323060257280.

The previous prime is 21044020312111. The next prime is 21044020312153. The reversal of 21044020312141 is 14121302044012.

It can be written as a sum of positive squares in 4 ways, for example, as 1894556792041 + 19149463520100 = 1376429^2 + 4376010^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 21044020312141 - 2⁷ = 21044020312013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21044020312111) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 15096140130 + ... + 15096141523.

It is an arithmetic number, because the mean of its divisors is an integer number (2853170616303).

Almost surely, 2^{21044020312141} is an apocalyptic number.

It is an amenable number.

21044020312141 is a deficient number, since it is larger than the sum of its proper divisors (1781344618283).

21044020312141 is a wasteful number, since it uses less digits than its factorization.

21044020312141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30192281711.

The product of its (nonzero) digits is 1536, while the sum is 25.

Adding to 21044020312141 its reverse (14121302044012), we get a palindrome (35165322356153).

The spelling of 21044020312141 in words is "twenty-one trillion, forty-four billion, twenty million, three hundred twelve thousand, one hundred forty-one".