202221100001 has 4 divisors (see below), whose sum is σ = 202222652100. Its totient is φ = 202219547904.

The previous prime is 202221099979. The next prime is 202221100007. The reversal of 202221100001 is 100001122202.

It is a happy number.

202221100001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 116182131025 + 86038968976 = 340855^2 + 293324^2 .

It is a cyclic number.

It is not a de Polignac number, because 202221100001 - 2⁶ = 202221099937 is a prime.

It is a super-5 number, since 5×202221100001⁵ (a number of 58 digits) contains 55555 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202221100007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 560696 + ... + 847833.

It is an arithmetic number, because the mean of its divisors is an integer number (50555663025).

Almost surely, 2^202221100001 is an apocalyptic number.

It is an amenable number.

202221100001 is a deficient number, since it is larger than the sum of its proper divisors (1552099).

202221100001 is a wasteful number, since it uses less digits than its factorization.

202221100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1552098.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 202221100001 its reverse (100001122202), we get a palindrome (302222222203).

The spelling of 202221100001 in words is "two hundred two billion, two hundred twenty-one million, one hundred thousand, one".