201210121002221 has 8 divisors (see below), whose sum is σ = 201725735303040. Its totient is φ = 200694622107168.

The previous prime is 201210121002193. The next prime is 201210121002287. The reversal of 201210121002221 is 122200121012102.

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 201210121002221 - 2¹⁸ = 201210120740077 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 201210121002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201210121052221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25359431 + ... + 32334516.

It is an arithmetic number, because the mean of its divisors is an integer number (25215716912880).

Almost surely, 2^{201210121002221} is an apocalyptic number.

It is an amenable number.

201210121002221 is a deficient number, since it is larger than the sum of its proper divisors (515614300819).

201210121002221 is an equidigital number, since it uses as much as digits as its factorization.

201210121002221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57702883.

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

Adding to 201210121002221 its reverse (122200121012102), we get a palindrome (323410242014323).

The spelling of 201210121002221 in words is "two hundred one trillion, two hundred ten billion, one hundred twenty-one million, two thousand, two hundred twenty-one".