21110132340413 has 4 divisors (see below), whose sum is σ = 21110248114560. Its totient is φ = 21110016566268.

The previous prime is 21110132340389. The next prime is 21110132340461. The reversal of 21110132340413 is 31404323101112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-21110132340413 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 (21110132840413) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57613133 + ... + 57978386.

It is an arithmetic number, because the mean of its divisors is an integer number (5277562028640).

Almost surely, 2^{21110132340413} is an apocalyptic number.

It is an amenable number.

21110132340413 is a deficient number, since it is larger than the sum of its proper divisors (115774147).

21110132340413 is a wasteful number, since it uses less digits than its factorization.

21110132340413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115774146.

The product of its (nonzero) digits is 1728, while the sum is 26.

Adding to 21110132340413 its reverse (31404323101112), we get a palindrome (52514455441525).

The spelling of 21110132340413 in words is "twenty-one trillion, one hundred ten billion, one hundred thirty-two million, three hundred forty thousand, four hundred thirteen".