1001202100221 has 16 divisors (see below), whose sum is σ = 1354970517120. Its totient is φ = 657521668800.

The previous prime is 1001202100207. The next prime is 1001202100279. The reversal of 1001202100221 is 1220012021001.

It is not a de Polignac number, because 1001202100221 - 2¹⁴ = 1001202083837 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1001202100197 and 1001202100206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1001202100321) 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, 8792505 + ... + 8905646.

It is an arithmetic number, because the mean of its divisors is an integer number (84685657320).

Almost surely, 2^{1001202100221} is an apocalyptic number.

It is an amenable number.

1001202100221 is a deficient number, since it is larger than the sum of its proper divisors (353768416899).

1001202100221 is a wasteful number, since it uses less digits than its factorization.

1001202100221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17698436.

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

Adding to 1001202100221 its reverse (1220012021001), we get a palindrome (2221214121222).

The spelling of 1001202100221 in words is "one trillion, one billion, two hundred two million, one hundred thousand, two hundred twenty-one".