201001002022221 has 32 divisors (see below), whose sum is σ = 277362170265600. Its totient is φ = 129324238310400.

The previous prime is 201001002022201. The next prime is 201001002022243. The reversal of 201001002022221 is 122220200100102.

It is not a de Polignac number, because 201001002022221 - 2¹⁸ = 201001001760077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201001002022221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201001002022201) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4990445935 + ... + 4990486211.

It is an arithmetic number, because the mean of its divisors is an integer number (8667567820800).

Almost surely, 2^{201001002022221} is an apocalyptic number.

It is an amenable number.

201001002022221 is a deficient number, since it is larger than the sum of its proper divisors (76361168243379).

201001002022221 is a wasteful number, since it uses less digits than its factorization.

201001002022221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63589.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 201001002022221 its reverse (122220200100102), we get a palindrome (323221202122323).

The spelling of 201001002022221 in words is "two hundred one trillion, one billion, two million, twenty-two thousand, two hundred twenty-one".