201021110102221 has 8 divisors (see below), whose sum is σ = 202424544057600. Its totient is φ = 199618400133648.

The previous prime is 201021110102213. The next prime is 201021110102231. The reversal of 201021110102221 is 122201011120102.

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 201021110102221 - 2³ = 201021110102213 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 201021110102195 and 201021110102204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201021110102231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 180439441 + ... + 181550086.

It is an arithmetic number, because the mean of its divisors is an integer number (25303068007200).

Almost surely, 2^{201021110102221} is an apocalyptic number.

It is an amenable number.

201021110102221 is a deficient number, since it is larger than the sum of its proper divisors (1403433955379).

201021110102221 is a wasteful number, since it uses less digits than its factorization.

201021110102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361993403.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 201021110102221 its reverse (122201011120102), we get a palindrome (323222121222323).

The spelling of 201021110102221 in words is "two hundred one trillion, twenty-one billion, one hundred ten million, one hundred two thousand, two hundred twenty-one".