211122111102121 has 4 divisors (see below), whose sum is σ = 211122186912000. Its totient is φ = 211122035292244.

The previous prime is 211122111102107. The next prime is 211122111102127. The reversal of 211122111102121 is 121201111221112.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 211122111102121 - 2¹⁷ = 211122110971049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211122111102127) 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, 33561721 + ... + 39352678.

It is an arithmetic number, because the mean of its divisors is an integer number (52780546728000).

Almost surely, 2^{211122111102121} is an apocalyptic number.

It is an amenable number.

211122111102121 is a deficient number, since it is larger than the sum of its proper divisors (75809879).

211122111102121 is an equidigital number, since it uses as much as digits as its factorization.

211122111102121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75809878.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 211122111102121 its reverse (121201111221112), we get a palindrome (332323222323233).

The spelling of 211122111102121 in words is "two hundred eleven trillion, one hundred twenty-two billion, one hundred eleven million, one hundred two thousand, one hundred twenty-one".