100202111000221 has 4 divisors (see below), whose sum is σ = 100209692318652. Its totient is φ = 100194529681792.

The previous prime is 100202111000209. The next prime is 100202111000261. The reversal of 100202111000221 is 122000111202001.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 60662990936025 + 39539120064196 = 7788645^2 + 6288014^2 .

It is a cyclic number.

It is not a de Polignac number, because 100202111000221 - 2⁷ = 100202111000093 is a prime.

It is a super-2 number, since 2×100202111000221² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100202111000261) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3790639390 + ... + 3790665823.

It is an arithmetic number, because the mean of its divisors is an integer number (25052423079663).

Almost surely, 2^{100202111000221} is an apocalyptic number.

It is an amenable number.

100202111000221 is a deficient number, since it is larger than the sum of its proper divisors (7581318431).

100202111000221 is an equidigital number, since it uses as much as digits as its factorization.

100202111000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7581318430.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 100202111000221 its reverse (122000111202001), we get a palindrome (222202222202222).

The spelling of 100202111000221 in words is "one hundred trillion, two hundred two billion, one hundred eleven million, two hundred twenty-one", and thus it is an aban number.