201210202220021 has 8 divisors (see below), whose sum is σ = 214179990537600. Its totient is φ = 188478391669920.

The previous prime is 201210202220009. The next prime is 201210202220033. The reversal of 201210202220021 is 120022202012102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (201210202220009) and next prime (201210202220033).

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 201210202220021 - 2⁴⁶ = 130841458042357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201210202229021) 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, 59494440125 + ... + 59494443506.

It is an arithmetic number, because the mean of its divisors is an integer number (26772498817200).

Almost surely, 2^{201210202220021} is an apocalyptic number.

It is an amenable number.

201210202220021 is a deficient number, since it is larger than the sum of its proper divisors (12969788317579).

201210202220021 is a wasteful number, since it uses less digits than its factorization.

201210202220021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118988883739.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 201210202220021 its reverse (120022202012102), we get a palindrome (321232404232123).

The spelling of 201210202220021 in words is "two hundred one trillion, two hundred ten billion, two hundred two million, two hundred twenty thousand, twenty-one".