202001101001 has 24 divisors (see below), whose sum is σ = 237462736896. Its totient is φ = 171317311200.

The previous prime is 202001100979. The next prime is 202001101007. The reversal of 202001101001 is 100101100202.

It is a de Polignac number, because none of the positive numbers 2^k-202001101001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202001101001.

It is not an unprimeable number, because it can be changed into a prime (202001101007) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8039480 + ... + 8064566.

It is an arithmetic number, because the mean of its divisors is an integer number (9894280704).

Almost surely, 2^202001101001 is an apocalyptic number.

It is an amenable number.

202001101001 is a deficient number, since it is larger than the sum of its proper divisors (35461635895).

202001101001 is a wasteful number, since it uses less digits than its factorization.

202001101001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26829 (or 26822 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 202001101001 its reverse (100101100202), we get a palindrome (302102201203).

The spelling of 202001101001 in words is "two hundred two billion, one million, one hundred one thousand, one".