202201111101001 has 4 divisors (see below), whose sum is σ = 202201282920852. Its totient is φ = 202200939281152.

The previous prime is 202201111100993. The next prime is 202201111101013. The reversal of 202201111101001 is 100101111102202.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 70182757575225 + 132018353525776 = 8377515^2 + 11489924^2 .

It is a cyclic number.

It is not a de Polignac number, because 202201111101001 - 2³ = 202201111100993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202201111401001) 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 3 ways as a sum of consecutive naturals, for example, 84132436 + ... + 86502421.

It is an arithmetic number, because the mean of its divisors is an integer number (50550320730213).

Almost surely, 2^{202201111101001} is an apocalyptic number.

It is an amenable number.

202201111101001 is a deficient number, since it is larger than the sum of its proper divisors (171819851).

202201111101001 is a wasteful number, since it uses less digits than its factorization.

202201111101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171819850.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 202201111101001 its reverse (100101111102202), we get a palindrome (302302222203203).

The spelling of 202201111101001 in words is "two hundred two trillion, two hundred one billion, one hundred eleven million, one hundred one thousand, one".