201002100221 has 32 divisors (see below), whose sum is σ = 226929935232. Its totient is φ = 176819086080.

The previous prime is 201002100199. The next prime is 201002100253. The reversal of 201002100221 is 122001200102.

It is a happy number.

It is not a de Polignac number, because 201002100221 - 2¹⁸ = 201001838077 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201002102221) 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, 5343746 + ... + 5381228.

It is an arithmetic number, because the mean of its divisors is an integer number (7091560476).

Almost surely, 2^201002100221 is an apocalyptic number.

It is an amenable number.

201002100221 is a deficient number, since it is larger than the sum of its proper divisors (25927835011).

201002100221 is a wasteful number, since it uses less digits than its factorization.

201002100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37773.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201002100221 its reverse (122001200102), we get a palindrome (323003300323).

The spelling of 201002100221 in words is "two hundred one billion, two million, one hundred thousand, two hundred twenty-one".