201202222111021 has 4 divisors (see below), whose sum is σ = 204205240351552. Its totient is φ = 198199203870492.

The previous prime is 201202222110997. The next prime is 201202222111097. The reversal of 201202222111021 is 120111222202102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 201202222111021 - 2²¹ = 201202220013869 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 201202222111021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201202222111621) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1501509120165 + ... + 1501509120298.

It is an arithmetic number, because the mean of its divisors is an integer number (51051310087888).

Almost surely, 2^{201202222111021} is an apocalyptic number.

It is an amenable number.

201202222111021 is a deficient number, since it is larger than the sum of its proper divisors (3003018240531).

201202222111021 is an equidigital number, since it uses as much as digits as its factorization.

201202222111021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3003018240530.

The product of its (nonzero) digits is 128, while the sum is 19.

Adding to 201202222111021 its reverse (120111222202102), we get a palindrome (321313444313123).

The spelling of 201202222111021 in words is "two hundred one trillion, two hundred two billion, two hundred twenty-two million, one hundred eleven thousand, twenty-one".