21210201102201 has 16 divisors (see below), whose sum is σ = 28583991973824. Its totient is φ = 13988396381184.

The previous prime is 21210201102179. The next prime is 21210201102217. The reversal of 21210201102201 is 10220110201212.

It is not a de Polignac number, because 21210201102201 - 2⁹ = 21210201101689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21210201102241) 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, 14844780 + ... + 16210733.

It is an arithmetic number, because the mean of its divisors is an integer number (1786499498364).

Almost surely, 2^{21210201102201} is an apocalyptic number.

It is an amenable number.

21210201102201 is a deficient number, since it is larger than the sum of its proper divisors (7373790871623).

21210201102201 is a wasteful number, since it uses less digits than its factorization.

21210201102201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31057960.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 21210201102201 its reverse (10220110201212), we get a palindrome (31430311303413).

The spelling of 21210201102201 in words is "twenty-one trillion, two hundred ten billion, two hundred one million, one hundred two thousand, two hundred one".