201010020221221 has 8 divisors (see below), whose sum is σ = 201147018545088. Its totient is φ = 200873027148000.

The previous prime is 201010020221203. The next prime is 201010020221239. The reversal of 201010020221221 is 122122020010102.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (201010020221203) and next prime (201010020221239).

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 201010020221221 - 2²³ = 201010011832613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201010020221195 and 201010020221204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201010020221201) 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, 76864386 + ... + 79436476.

It is an arithmetic number, because the mean of its divisors is an integer number (25143377318136).

Almost surely, 2^{201010020221221} is an apocalyptic number.

It is an amenable number.

201010020221221 is a deficient number, since it is larger than the sum of its proper divisors (136998323867).

201010020221221 is a wasteful number, since it uses less digits than its factorization.

201010020221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2625323.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201010020221221 its reverse (122122020010102), we get a palindrome (323132040231323).

The spelling of 201010020221221 in words is "two hundred one trillion, ten billion, twenty million, two hundred twenty-one thousand, two hundred twenty-one".