21100201120201 has 16 divisors (see below), whose sum is σ = 24437007616000. Its totient is φ = 17845614134928.

The previous prime is 21100201120183. The next prime is 21100201120231. The reversal of 21100201120201 is 10202110200112.

It is a cyclic number.

It is not a de Polignac number, because 21100201120201 - 2⁷ = 21100201120073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21100201120231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66362001 + ... + 66679198.

It is an arithmetic number, because the mean of its divisors is an integer number (1527312976000).

Almost surely, 2^{21100201120201} is an apocalyptic number.

It is an amenable number.

21100201120201 is a deficient number, since it is larger than the sum of its proper divisors (3336806495799).

21100201120201 is a wasteful number, since it uses less digits than its factorization.

21100201120201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 133041508.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 21100201120201 its reverse (10202110200112), we get a palindrome (31302311320313).

The spelling of 21100201120201 in words is "twenty-one trillion, one hundred billion, two hundred one million, one hundred twenty thousand, two hundred one".