21002202002111 has 8 divisors (see below), whose sum is σ = 24259227981264. Its totient is φ = 17969798504320.

The previous prime is 21002202002101. The next prime is 21002202002207. The reversal of 21002202002111 is 11120020220012.

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 21002202002111 - 2¹⁰ = 21002202001087 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 (21002202002101) 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, 56155620140 + ... + 56155620513.

It is an arithmetic number, because the mean of its divisors is an integer number (3032403497658).

Almost surely, 2^{21002202002111} is an apocalyptic number.

21002202002111 is a deficient number, since it is larger than the sum of its proper divisors (3257025979153).

21002202002111 is a wasteful number, since it uses less digits than its factorization.

21002202002111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112311240681.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21002202002111 its reverse (11120020220012), we get a palindrome (32122222222123).

The spelling of 21002202002111 in words is "twenty-one trillion, two billion, two hundred two million, two thousand, one hundred eleven".