21110220210201 has 16 divisors (see below), whose sum is σ = 28833616707840. Its totient is φ = 13730155383680.

The previous prime is 21110220210193. The next prime is 21110220210269. The reversal of 21110220210201 is 10201202201112.

It is a cyclic number.

It is not a de Polignac number, because 21110220210201 - 2³ = 21110220210193 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21110220217201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37750720 + ... + 38305838.

It is an arithmetic number, because the mean of its divisors is an integer number (1802101044240).

Almost surely, 2^{21110220210201} is an apocalyptic number.

It is an amenable number.

21110220210201 is a deficient number, since it is larger than the sum of its proper divisors (7723396497639).

21110220210201 is a wasteful number, since it uses less digits than its factorization.

21110220210201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864336.

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

Adding to 21110220210201 its reverse (10201202201112), we get a palindrome (31311422411313).

The spelling of 21110220210201 in words is "twenty-one trillion, one hundred ten billion, two hundred twenty million, two hundred ten thousand, two hundred one".