100221210122011 has 4 divisors (see below), whose sum is σ = 109332229224024. Its totient is φ = 91110191020000.

The previous prime is 100221210121999. The next prime is 100221210122053. The reversal of 100221210122011 is 110221012122001.

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

It is a cyclic number.

It is not a de Polignac number, because 100221210122011 - 2⁹ = 100221210121499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100221210122071) 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, 4555509550990 + ... + 4555509551011.

It is an arithmetic number, because the mean of its divisors is an integer number (27333057306006).

Almost surely, 2^{100221210122011} is an apocalyptic number.

100221210122011 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

100221210122011 is a deficient number, since it is larger than the sum of its proper divisors (9111019102013).

100221210122011 is an equidigital number, since it uses as much as digits as its factorization.

100221210122011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9111019102012.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 100221210122011 its reverse (110221012122001), we get a palindrome (210442222244012).

The spelling of 100221210122011 in words is "one hundred trillion, two hundred twenty-one billion, two hundred ten million, one hundred twenty-two thousand, eleven".