21153002200611 has 16 divisors (see below), whose sum is σ = 28351996612608. Its totient is φ = 14028006340800.

The previous prime is 21153002200559. The next prime is 21153002200651. The reversal of 21153002200611 is 11600220035112.

It is a happy number.

It is not a de Polignac number, because 21153002200611 - 2²⁶ = 21152935091747 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21153002200651) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68455146 + ... + 68763456.

It is an arithmetic number, because the mean of its divisors is an integer number (1771999788288).

Almost surely, 2^{21153002200611} is an apocalyptic number.

21153002200611 is a deficient number, since it is larger than the sum of its proper divisors (7198994411997).

21153002200611 is a wasteful number, since it uses less digits than its factorization.

21153002200611 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428242.

The product of its (nonzero) digits is 720, while the sum is 24.

Adding to 21153002200611 its reverse (11600220035112), we get a palindrome (32753222235723).

The spelling of 21153002200611 in words is "twenty-one trillion, one hundred fifty-three billion, two million, two hundred thousand, six hundred eleven".