21153012611141 has 8 divisors (see below), whose sum is σ = 21378880251168. Its totient is φ = 20928120642000.

The previous prime is 21153012611117. The next prime is 21153012611149. The reversal of 21153012611141 is 14111621035112.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21153012611141 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 (21153012611149) 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, 243874130 + ... + 243960851.

It is an arithmetic number, because the mean of its divisors is an integer number (2672360031396).

Almost surely, 2^{21153012611141} is an apocalyptic number.

It is an amenable number.

21153012611141 is a deficient number, since it is larger than the sum of its proper divisors (225867640027).

21153012611141 is a wasteful number, since it uses less digits than its factorization.

21153012611141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487835443.

The product of its (nonzero) digits is 1440, while the sum is 29.

Adding to 21153012611141 its reverse (14111621035112), we get a palindrome (35264633646253).

The spelling of 21153012611141 in words is "twenty-one trillion, one hundred fifty-three billion, twelve million, six hundred eleven thousand, one hundred forty-one".