201202101020221 has 16 divisors (see below), whose sum is σ = 239667340976128. Its totient is φ = 165275404873200.

The previous prime is 201202101020177. The next prime is 201202101020233. The reversal of 201202101020221 is 122020101202102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 201202101020221 - 2⁹ = 201202101019709 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201202101020195 and 201202101020204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201202101020321) 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, 4500941835 + ... + 4500986536.

It is an arithmetic number, because the mean of its divisors is an integer number (14979208811008).

Almost surely, 2^{201202101020221} is an apocalyptic number.

It is an amenable number.

201202101020221 is a deficient number, since it is larger than the sum of its proper divisors (38465239955907).

201202101020221 is a wasteful number, since it uses less digits than its factorization.

201202101020221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9001928512.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 201202101020221 its reverse (122020101202102), we get a palindrome (323222202222323).

The spelling of 201202101020221 in words is "two hundred one trillion, two hundred two billion, one hundred one million, twenty thousand, two hundred twenty-one".