121100100222211 has 4 divisors (see below), whose sum is σ = 132109200242424. Its totient is φ = 110091000202000.

The previous prime is 121100100222209. The next prime is 121100100222223. The reversal of 121100100222211 is 112222001001121.

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 121100100222211 - 2¹ = 121100100222209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121100100222811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5504550010090 + ... + 5504550010111.

It is an arithmetic number, because the mean of its divisors is an integer number (33027300060606).

Almost surely, 2^{121100100222211} is an apocalyptic number.

121100100222211 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121100100222211 is a deficient number, since it is larger than the sum of its proper divisors (11009100020213).

121100100222211 is a wasteful number, since it uses less digits than its factorization.

121100100222211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11009100020212.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121100100222211 its reverse (112222001001121), we get a palindrome (233322101223332).

The spelling of 121100100222211 in words is "one hundred twenty-one trillion, one hundred billion, one hundred million, two hundred twenty-two thousand, two hundred eleven".