100121020211 has 4 divisors (see below), whose sum is σ = 100205369352. Its totient is φ = 100036671072.

The previous prime is 100121020157. The next prime is 100121020267. The reversal of 100121020211 is 112020121001.

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 100121020211 - 2⁶ = 100121020147 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 100121020192 and 100121020201.

It is not an unprimeable number, because it can be changed into a prime (100121020291) 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, 42172790 + ... + 42175163.

It is an arithmetic number, because the mean of its divisors is an integer number (25051342338).

Almost surely, 2^100121020211 is an apocalyptic number.

100121020211 is a deficient number, since it is larger than the sum of its proper divisors (84349141).

100121020211 is an equidigital number, since it uses as much as digits as its factorization.

100121020211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84349140.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 100121020211 its reverse (112020121001), we get a palindrome (212141141212).

The spelling of 100121020211 in words is "one hundred billion, one hundred twenty-one million, twenty thousand, two hundred eleven".