100121121221211 has 96 divisors (see below), whose sum is σ = 153492780639744. Its totient is φ = 62785400832000.

The previous prime is 100121121221201. The next prime is 100121121221239. The reversal of 100121121221211 is 112122121121001.

It is a happy number.

100121121221211 is a `hidden beast` number, since 1 + 0 + 0 + 1 + 211 + 21 + 221 + 211 = 666.

It is not a de Polignac number, because 100121121221211 - 2⁵ = 100121121221179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (100121121221201) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4898043751 + ... + 4898064191.

It is an arithmetic number, because the mean of its divisors is an integer number (1598883131664).

Almost surely, 2^{100121121221211} is an apocalyptic number.

100121121221211 is a deficient number, since it is larger than the sum of its proper divisors (53371659418533).

100121121221211 is a wasteful number, since it uses less digits than its factorization.

100121121221211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22085 (or 22082 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 18.

Adding to 100121121221211 its reverse (112122121121001), we get a palindrome (212243242342212).

The spelling of 100121121221211 in words is "one hundred trillion, one hundred twenty-one billion, one hundred twenty-one million, two hundred twenty-one thousand, two hundred eleven".