100121221011 has 8 divisors (see below), whose sum is σ = 152565670144. Its totient is φ = 57212126280.

The previous prime is 100121221009. The next prime is 100121221019. The reversal of 100121221011 is 110122121001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 100121221011 - 2¹ = 100121221009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100121221019) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2383838575 + ... + 2383838616.

It is an arithmetic number, because the mean of its divisors is an integer number (19070708768).

Almost surely, 2^100121221011 is an apocalyptic number.

100121221011 is a deficient number, since it is larger than the sum of its proper divisors (52444449133).

100121221011 is an equidigital number, since it uses as much as digits as its factorization.

100121221011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4767677201.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 100121221011 its reverse (110122121001), we get a palindrome (210243342012).

The spelling of 100121221011 in words is "one hundred billion, one hundred twenty-one million, two hundred twenty-one thousand, eleven".