201022202102021 has 8 divisors (see below), whose sum is σ = 201150379929240. Its totient is φ = 200894052538368.

The previous prime is 201022202101997. The next prime is 201022202102077. The reversal of 201022202102021 is 120201202220102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 120759219902500 + 80262982199521 = 10989050^2 + 8958961^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-201022202102021 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 (201022202102921) 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, 7172615 + ... + 21295323.

It is an arithmetic number, because the mean of its divisors is an integer number (25143797491155).

Almost surely, 2^{201022202102021} is an apocalyptic number.

It is an amenable number.

201022202102021 is a deficient number, since it is larger than the sum of its proper divisors (128177827219).

201022202102021 is a wasteful number, since it uses less digits than its factorization.

201022202102021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14131783.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 201022202102021 its reverse (120201202220102), we get a palindrome (321223404322123).

The spelling of 201022202102021 in words is "two hundred one trillion, twenty-two billion, two hundred two million, one hundred two thousand, twenty-one".