211022120123 has 4 divisors (see below), whose sum is σ = 211024349040. Its totient is φ = 211019891208.

The previous prime is 211022120107. The next prime is 211022120131. The reversal of 211022120123 is 321021220112.

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 211022120123 - 2⁴ = 211022120107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (211022128123) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 965840 + ... + 1163997.

It is an arithmetic number, because the mean of its divisors is an integer number (52756087260).

Almost surely, 2^211022120123 is an apocalyptic number.

211022120123 is a deficient number, since it is larger than the sum of its proper divisors (2228917).

211022120123 is an equidigital number, since it uses as much as digits as its factorization.

211022120123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2228916.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 211022120123 its reverse (321021220112), we get a palindrome (532043340235).

The spelling of 211022120123 in words is "two hundred eleven billion, twenty-two million, one hundred twenty thousand, one hundred twenty-three".