211001121200120 has 32 divisors (see below), whose sum is σ = 474789306423600. Its totient is φ = 84393909151488.

The previous prime is 211001121200099. The next prime is 211001121200209. The reversal of 211001121200120 is 21002121100112.

It is a junction number, because it is equal to n+sod(n) for n = 211001121200095 and 211001121200104.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203831285 + ... + 204863844.

Almost surely, 2^{211001121200120} is an apocalyptic number.

211001121200120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211001121200120 is an abundant number, since it is smaller than the sum of its proper divisors (263788185223480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211001121200120 is a wasteful number, since it uses less digits than its factorization.

211001121200120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408708047 (or 408708043 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 211001121200120 its reverse (21002121100112), we get a palindrome (232003242300232).

The spelling of 211001121200120 in words is "two hundred eleven trillion, one billion, one hundred twenty-one million, two hundred thousand, one hundred twenty".