202101102202201 has 4 divisors (see below), whose sum is σ = 203388370369252. Its totient is φ = 200813834035152.

The previous prime is 202101102202141. The next prime is 202101102202211. The reversal of 202101102202201 is 102202201101202.

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 82724500280601 + 119376601921600 = 9095301^2 + 10925960^2 .

It is a cyclic number.

It is not a de Polignac number, because 202101102202201 - 2²¹ = 202101100105049 is a prime.

It is a super-2 number, since 2×202101102202201² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202101102202211) 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, 643634083290 + ... + 643634083603.

It is an arithmetic number, because the mean of its divisors is an integer number (50847092592313).

Almost surely, 2^{202101102202201} is an apocalyptic number.

It is an amenable number.

202101102202201 is a deficient number, since it is larger than the sum of its proper divisors (1287268167051).

202101102202201 is a wasteful number, since it uses less digits than its factorization.

202101102202201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1287268167050.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 202101102202201 its reverse (102202201101202), we get a palindrome (304303303303403).

The spelling of 202101102202201 in words is "two hundred two trillion, one hundred one billion, one hundred two million, two hundred two thousand, two hundred one".