201221002202221 has 8 divisors (see below), whose sum is σ = 203788466853120. Its totient is φ = 198654046635408.

The previous prime is 201221002202197. The next prime is 201221002202243. The reversal of 201221002202221 is 122202200122102.

201221002202221 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 201221002202221 - 2⁵ = 201221002202189 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 (201221002202251) 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, 126475426 + ... + 128056531.

It is an arithmetic number, because the mean of its divisors is an integer number (25473558356640).

Almost surely, 2^{201221002202221} is an apocalyptic number.

It is an amenable number.

201221002202221 is a deficient number, since it is larger than the sum of its proper divisors (2567464650899).

201221002202221 is a wasteful number, since it uses less digits than its factorization.

201221002202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254542043.

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 201221002202221 its reverse (122202200122102), we get a palindrome (323423202324323).

The spelling of 201221002202221 in words is "two hundred one trillion, two hundred twenty-one billion, two million, two hundred two thousand, two hundred twenty-one".