201210112200221 has 4 divisors (see below), whose sum is σ = 201465779433792. Its totient is φ = 200954444966652.

The previous prime is 201210112200211. The next prime is 201210112200257. The reversal of 201210112200221 is 122002211012102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201210112200221 - 2⁴² = 196812065689117 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201210112200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201210112200211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127833615605 + ... + 127833617178.

It is an arithmetic number, because the mean of its divisors is an integer number (50366444858448).

Almost surely, 2^{201210112200221} is an apocalyptic number.

It is an amenable number.

201210112200221 is a deficient number, since it is larger than the sum of its proper divisors (255667233571).

201210112200221 is an equidigital number, since it uses as much as digits as its factorization.

201210112200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255667233570.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201210112200221 its reverse (122002211012102), we get a palindrome (323212323212323).

The spelling of 201210112200221 in words is "two hundred one trillion, two hundred ten billion, one hundred twelve million, two hundred thousand, two hundred twenty-one".