21210210112201 has 12 divisors (see below), whose sum is σ = 23420545899120. Its totient is φ = 19049695761080.

The previous prime is 21210210112183. The next prime is 21210210112207. The reversal of 21210210112201 is 10221101201212.

It is not a de Polignac number, because 21210210112201 - 2¹¹ = 21210210110153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21210210112207) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 139872031 + ... + 140023588.

It is an arithmetic number, because the mean of its divisors is an integer number (1951712158260).

Almost surely, 2^{21210210112201} is an apocalyptic number.

It is an amenable number.

21210210112201 is a deficient number, since it is larger than the sum of its proper divisors (2210335786919).

21210210112201 is an equidigital number, since it uses as much as digits as its factorization.

21210210112201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 279895796 (or 279895713 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 21210210112201 its reverse (10221101201212), we get a palindrome (31431311313413).

The spelling of 21210210112201 in words is "twenty-one trillion, two hundred ten billion, two hundred ten million, one hundred twelve thousand, two hundred one".