100221312011 has 4 divisors (see below), whose sum is σ = 100281362400. Its totient is φ = 100161261624.

The previous prime is 100221311999. The next prime is 100221312017. The reversal of 100221312011 is 110213122001.

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 100221312011 - 2¹⁸ = 100221049867 is a prime.

It is a super-2 number, since 2×100221312011² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100221312017) 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, 30022691 + ... + 30026028.

It is an arithmetic number, because the mean of its divisors is an integer number (25070340600).

Almost surely, 2^100221312011 is an apocalyptic number.

100221312011 is a deficient number, since it is larger than the sum of its proper divisors (60050389).

100221312011 is an equidigital number, since it uses as much as digits as its factorization.

100221312011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60050388.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 100221312011 its reverse (110213122001), we get a palindrome (210434434012).

The spelling of 100221312011 in words is "one hundred billion, two hundred twenty-one million, three hundred twelve thousand, eleven".