201101120202221 has 8 divisors (see below), whose sum is σ = 201367311411384. Its totient is φ = 200834934065920.

The previous prime is 201101120202217. The next prime is 201101120202233. The reversal of 201101120202221 is 122202021101102.

It can be written as a sum of positive squares in 4 ways, for example, as 2907826405225 + 198193293796996 = 1705235^2 + 14078114^2 .

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 201101120202221 - 2² = 201101120202217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 201101120202221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201101120204221) 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, 81654185 + ... + 84080961.

It is an arithmetic number, because the mean of its divisors is an integer number (25170913926423).

Almost surely, 2^{201101120202221} is an apocalyptic number.

It is an amenable number.

201101120202221 is a deficient number, since it is larger than the sum of its proper divisors (266191209163).

201101120202221 is a wasteful number, since it uses less digits than its factorization.

201101120202221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2536431.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 201101120202221 its reverse (122202021101102), we get a palindrome (323303141303323).

The spelling of 201101120202221 in words is "two hundred one trillion, one hundred one billion, one hundred twenty million, two hundred two thousand, two hundred twenty-one".