21012112210201 has 8 divisors (see below), whose sum is σ = 24019701022400. Its totient is φ = 18005988022128.

The previous prime is 21012112210169. The next prime is 21012112210241. The reversal of 21012112210201 is 10201221121012.

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

It is a cyclic number.

It is not a de Polignac number, because 21012112210201 - 2⁵ = 21012112210169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21012112210241) 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, 366125286 + ... + 366182671.

It is an arithmetic number, because the mean of its divisors is an integer number (3002462627800).

Almost surely, 2^{21012112210201} is an apocalyptic number.

It is an amenable number.

21012112210201 is a deficient number, since it is larger than the sum of its proper divisors (3007588812199).

21012112210201 is an equidigital number, since it uses as much as digits as its factorization.

21012112210201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 732312063.

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

Adding to 21012112210201 its reverse (10201221121012), we get a palindrome (31213333331213).

The spelling of 21012112210201 in words is "twenty-one trillion, twelve billion, one hundred twelve million, two hundred ten thousand, two hundred one".