21100221101201 has 8 divisors (see below), whose sum is σ = 23553735183264. Its totient is φ = 18735925713120.

The previous prime is 21100221101147. The next prime is 21100221101207. The reversal of 21100221101201 is 10210112200112.

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

It is a de Polignac number, because none of the positive numbers 2^k-21100221101201 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (21100221101207) 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, 22304672996 + ... + 22304673941.

It is an arithmetic number, because the mean of its divisors is an integer number (2944216897908).

Almost surely, 2^{21100221101201} is an apocalyptic number.

It is an amenable number.

21100221101201 is a deficient number, since it is larger than the sum of its proper divisors (2453514082063).

21100221101201 is a wasteful number, since it uses less digits than its factorization.

21100221101201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44609346991.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 21100221101201 its reverse (10210112200112), we get a palindrome (31310333301313).

The spelling of 21100221101201 in words is "twenty-one trillion, one hundred billion, two hundred twenty-one million, one hundred one thousand, two hundred one".