201210020022221 has 12 divisors (see below), whose sum is σ = 234177025822560. Its totient is φ = 172379970183960.

The previous prime is 201210020022107. The next prime is 201210020022227. The reversal of 201210020022221 is 122220020012102.

It is a happy number.

It is not a de Polignac number, because 201210020022221 - 2⁴² = 196811973511117 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 201210020022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201210020022227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1020867881 + ... + 1021064958.

It is an arithmetic number, because the mean of its divisors is an integer number (19514752151880).

Almost surely, 2^{201210020022221} is an apocalyptic number.

It is an amenable number.

201210020022221 is a deficient number, since it is larger than the sum of its proper divisors (32967005800339).

201210020022221 is a wasteful number, since it uses less digits than its factorization.

201210020022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2041934864 (or 2041934857 counting only the distinct ones).

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

Adding to 201210020022221 its reverse (122220020012102), we get a palindrome (323430040034323).

The spelling of 201210020022221 in words is "two hundred one trillion, two hundred ten billion, twenty million, twenty-two thousand, two hundred twenty-one".