21002200111101 has 8 divisors (see below), whose sum is σ = 30548654707104. Its totient is φ = 12728606127920.

The previous prime is 21002200111069. The next prime is 21002200111117. The reversal of 21002200111101 is 10111100220012.

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 21002200111101 - 2⁵ = 21002200111069 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002200111001) 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, 318215153166 + ... + 318215153231.

It is an arithmetic number, because the mean of its divisors is an integer number (3818581838388).

Almost surely, 2^{21002200111101} is an apocalyptic number.

It is an amenable number.

21002200111101 is a deficient number, since it is larger than the sum of its proper divisors (9546454596003).

21002200111101 is a wasteful number, since it uses less digits than its factorization.

21002200111101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636430306411.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 21002200111101 its reverse (10111100220012), we get a palindrome (31113300331113).

The spelling of 21002200111101 in words is "twenty-one trillion, two billion, two hundred million, one hundred eleven thousand, one hundred one".