21002202202101 has 8 divisors (see below), whose sum is σ = 28033079369280. Its totient is φ = 13986396584832.

The previous prime is 21002202202063. The next prime is 21002202202129. The reversal of 21002202202101 is 10120220220012.

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

It is not a de Polignac number, because 21002202202101 - 2¹⁰ = 21002202201077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21002202202181) 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, 3767884225 + ... + 3767889798.

It is an arithmetic number, because the mean of its divisors is an integer number (3504134921160).

Almost surely, 2^{21002202202101} is an apocalyptic number.

It is an amenable number.

21002202202101 is a deficient number, since it is larger than the sum of its proper divisors (7030877167179).

21002202202101 is an equidigital number, since it uses as much as digits as its factorization.

21002202202101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7535774955.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 21002202202101 its reverse (10120220220012), we get a palindrome (31122422422113).

The spelling of 21002202202101 in words is "twenty-one trillion, two billion, two hundred two million, two hundred two thousand, one hundred one".