21001102110201 has 8 divisors (see below), whose sum is σ = 28001490656704. Its totient is φ = 14000724151920.

The previous prime is 21001102110119. The next prime is 21001102110217. The reversal of 21001102110201 is 10201120110012.

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

It is not a de Polignac number, because 21001102110201 - 2⁷ = 21001102110073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21001102110251) 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, 6334860 + ... + 9062706.

It is an arithmetic number, because the mean of its divisors is an integer number (3500186332088).

Almost surely, 2^{21001102110201} is an apocalyptic number.

It is an amenable number.

21001102110201 is a deficient number, since it is larger than the sum of its proper divisors (7000388546503).

21001102110201 is a wasteful number, since it uses less digits than its factorization.

21001102110201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5294111.

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

Adding to 21001102110201 its reverse (10201120110012), we get a palindrome (31202222220213).

The spelling of 21001102110201 in words is "twenty-one trillion, one billion, one hundred two million, one hundred ten thousand, two hundred one".