211123113210121 has 16 divisors (see below), whose sum is σ = 248329412352000. Its totient is φ = 175752185232528.

The previous prime is 211123113210103. The next prime is 211123113210131. The reversal of 211123113210121 is 121012311321112.

It is a cyclic number.

It is not a de Polignac number, because 211123113210121 - 2⁷ = 211123113209993 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211123113210092 and 211123113210101.

It is not an unprimeable number, because it can be changed into a prime (211123113210131) 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 15 ways as a sum of consecutive naturals, for example, 3079447521 + ... + 3079516078.

It is an arithmetic number, because the mean of its divisors is an integer number (15520588272000).

Almost surely, 2^{211123113210121} is an apocalyptic number.

It is an amenable number.

211123113210121 is a deficient number, since it is larger than the sum of its proper divisors (37206299141879).

211123113210121 is an equidigital number, since it uses as much as digits as its factorization.

211123113210121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6158963748.

The product of its (nonzero) digits is 144, while the sum is 22.

Adding to 211123113210121 its reverse (121012311321112), we get a palindrome (332135424531233).

The spelling of 211123113210121 in words is "two hundred eleven trillion, one hundred twenty-three billion, one hundred thirteen million, two hundred ten thousand, one hundred twenty-one".