100110001010221 has 4 divisors (see below), whose sum is σ = 100257873981372. Its totient is φ = 99962128039072.

The previous prime is 100110001010203. The next prime is 100110001010339. The reversal of 100110001010221 is 122010100011001.

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 53425427932900 + 46684573077321 = 7309270^2 + 6832611^2 .

It is a cyclic number.

It is not a de Polignac number, because 100110001010221 - 2⁵ = 100110001010189 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100110001010198 and 100110001010207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100110001010521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73936484560 + ... + 73936485913.

It is an arithmetic number, because the mean of its divisors is an integer number (25064468495343).

Almost surely, 2^{100110001010221} is an apocalyptic number.

It is an amenable number.

100110001010221 is a deficient number, since it is larger than the sum of its proper divisors (147872971151).

100110001010221 is an equidigital number, since it uses as much as digits as its factorization.

100110001010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147872971150.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 100110001010221 its reverse (122010100011001), we get a palindrome (222120101021222).

The spelling of 100110001010221 in words is "one hundred trillion, one hundred ten billion, one million, ten thousand, two hundred twenty-one".