202001221100001 has 16 divisors (see below), whose sum is σ = 271457585584128. Its totient is φ = 133606183334400.

The previous prime is 202001221099963. The next prime is 202001221100023. The reversal of 202001221100001 is 100001122100202.

It is not a de Polignac number, because 202001221100001 - 2³⁴ = 201984041230817 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 202001221100001.

It is not an unprimeable number, because it can be changed into a prime (202001221100051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55728691 + ... + 59242631.

It is an arithmetic number, because the mean of its divisors is an integer number (16966099099008).

Almost surely, 2^{202001221100001} is an apocalyptic number.

It is an amenable number.

202001221100001 is a deficient number, since it is larger than the sum of its proper divisors (69456364484127).

202001221100001 is a wasteful number, since it uses less digits than its factorization.

202001221100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3664952.

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

Adding to 202001221100001 its reverse (100001122100202), we get a palindrome (302002343200203).

The spelling of 202001221100001 in words is "two hundred two trillion, one billion, two hundred twenty-one million, one hundred thousand, one".