202001020100001 has 12 divisors (see below), whose sum is σ = 302585890191312. Its totient is φ = 134667346733172.

The previous prime is 202001020099919. The next prime is 202001020100029. The reversal of 202001020100001 is 100001020100202.

It is not a de Polignac number, because 202001020100001 - 2⁴² = 197602973588897 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (202001020150001) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 415639958811 + ... + 415639959296.

It is an arithmetic number, because the mean of its divisors is an integer number (25215490849276).

Almost surely, 2^{202001020100001} is an apocalyptic number.

It is an amenable number.

202001020100001 is a deficient number, since it is larger than the sum of its proper divisors (100584870091311).

202001020100001 is an frugal number, since it uses more digits than its factorization.

202001020100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 831279918122 (or 831279918110 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 202001020100001 its reverse (100001020100202), we get a palindrome (302002040200203).

The spelling of 202001020100001 in words is "two hundred two trillion, one billion, twenty million, one hundred thousand, one".