211120120022121 has 20 divisors (see below), whose sum is σ = 320722341786000. Its totient is φ = 138361208598936.

The previous prime is 211120120022111. The next prime is 211120120022171. The reversal of 211120120022121 is 121220021021112.

211120120022121 is a `hidden beast` number, since 21 + 1 + 1 + 201 + 200 + 221 + 21 = 666.

It is not a de Polignac number, because 211120120022121 - 2³⁸ = 210845242115177 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211120120022094 and 211120120022103.

It is not an unprimeable number, because it can be changed into a prime (211120120022111) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 22088310771 + ... + 22088320328.

It is an arithmetic number, because the mean of its divisors is an integer number (16036117089300).

Almost surely, 2^{211120120022121} is an apocalyptic number.

It is an amenable number.

211120120022121 is a deficient number, since it is larger than the sum of its proper divisors (109602221763879).

211120120022121 is an equidigital number, since it uses as much as digits as its factorization.

211120120022121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44176631170 (or 44176631161 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 211120120022121 its reverse (121220021021112), we get a palindrome (332340141043233).

The spelling of 211120120022121 in words is "two hundred eleven trillion, one hundred twenty billion, one hundred twenty million, twenty-two thousand, one hundred twenty-one".