21100202220201 has 8 divisors (see below), whose sum is σ = 30297726264960. Its totient is φ = 12984739827792.

The previous prime is 21100202220191. The next prime is 21100202220239. The reversal of 21100202220201 is 10202220200112.

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

It is not a de Polignac number, because 21100202220201 - 2¹³ = 21100202212009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21100202220401) 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, 270515413041 + ... + 270515413118.

It is an arithmetic number, because the mean of its divisors is an integer number (3787215783120).

Almost surely, 2^{21100202220201} is an apocalyptic number.

It is an amenable number.

21100202220201 is a deficient number, since it is larger than the sum of its proper divisors (9197524044759).

21100202220201 is a wasteful number, since it uses less digits than its factorization.

21100202220201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 541030826175.

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

Adding to 21100202220201 its reverse (10202220200112), we get a palindrome (31302422420313).

The spelling of 21100202220201 in words is "twenty-one trillion, one hundred billion, two hundred two million, two hundred twenty thousand, two hundred one".