201022120221 has 16 divisors (see below), whose sum is σ = 298600498560. Its totient is φ = 119440198080.

The previous prime is 201022120177. The next prime is 201022120261. The reversal of 201022120221 is 122021220102.

It is not a de Polignac number, because 201022120221 - 2⁷ = 201022120093 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 201022120221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201022120261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 88868065 + ... + 88870326.

It is an arithmetic number, because the mean of its divisors is an integer number (18662531160).

Almost surely, 2^201022120221 is an apocalyptic number.

It is an amenable number.

201022120221 is a deficient number, since it is larger than the sum of its proper divisors (97578378339).

201022120221 is a wasteful number, since it uses less digits than its factorization.

201022120221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177738436.

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

Adding to 201022120221 its reverse (122021220102), we get a palindrome (323043340323).

The spelling of 201022120221 in words is "two hundred one billion, twenty-two million, one hundred twenty thousand, two hundred twenty-one".