202020211100001 has 64 divisors (see below), whose sum is σ = 311872271800320. Its totient is φ = 113935799577600.

The previous prime is 202020211099901. The next prime is 202020211100011. The reversal of 202020211100001 is 100001112020202.

It is not a de Polignac number, because 202020211100001 - 2¹⁰ = 202020211098977 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202020211100001.

It is not an unprimeable number, because it can be changed into a prime (202020211100011) 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 63 ways as a sum of consecutive naturals, for example, 1152554970 + ... + 1152730236.

It is an arithmetic number, because the mean of its divisors is an integer number (4873004246880).

Almost surely, 2^{202020211100001} is an apocalyptic number.

202020211100001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

202020211100001 is a deficient number, since it is larger than the sum of its proper divisors (109852060700319).

202020211100001 is a wasteful number, since it uses less digits than its factorization.

202020211100001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177094.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 202020211100001 its reverse (100001112020202), we get a palindrome (302021323120203).

The spelling of 202020211100001 in words is "two hundred two trillion, twenty billion, two hundred eleven million, one hundred thousand, one".