121011100211 has 4 divisors (see below), whose sum is σ = 125183896800. Its totient is φ = 116838303624.

The previous prime is 121011100123. The next prime is 121011100213. The reversal of 121011100211 is 112001110121.

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 121011100211 - 2¹⁴ = 121011083827 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121011100192 and 121011100201.

It is not an unprimeable number, because it can be changed into a prime (121011100213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2086398251 + ... + 2086398308.

It is an arithmetic number, because the mean of its divisors is an integer number (31295974200).

Almost surely, 2^121011100211 is an apocalyptic number.

121011100211 is a deficient number, since it is larger than the sum of its proper divisors (4172796589).

121011100211 is an equidigital number, since it uses as much as digits as its factorization.

121011100211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4172796588.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 121011100211 its reverse (112001110121), we get a palindrome (233012210332).

The spelling of 121011100211 in words is "one hundred twenty-one billion, eleven million, one hundred thousand, two hundred eleven".