21110201100121 has 8 divisors (see below), whose sum is σ = 24126227213760. Its totient is φ = 18094245761328.

The previous prime is 21110201100031. The next prime is 21110201100133. The reversal of 21110201100121 is 12100110201112.

It is a happy number.

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 21110201100121 - 2²⁵ = 21110167545689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21110201106121) 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, 17053006 + ... + 18248983.

It is an arithmetic number, because the mean of its divisors is an integer number (3015778401720).

Almost surely, 2^{21110201100121} is an apocalyptic number.

It is an amenable number.

21110201100121 is a deficient number, since it is larger than the sum of its proper divisors (3016026113639).

21110201100121 is an equidigital number, since it uses as much as digits as its factorization.

21110201100121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35387423.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 21110201100121 its reverse (12100110201112), we get a palindrome (33210311301233).

The spelling of 21110201100121 in words is "twenty-one trillion, one hundred ten billion, two hundred one million, one hundred thousand, one hundred twenty-one".