211001120121 has 16 divisors (see below), whose sum is σ = 306983291328. Its totient is φ = 127849228800.

The previous prime is 211001120117. The next prime is 211001120123. The reversal of 211001120121 is 121021100112.

It is not a de Polignac number, because 211001120121 - 2² = 211001120117 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 211001120097 and 211001120106.

It is not an unprimeable number, because it can be changed into a prime (211001120123) 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 15 ways as a sum of consecutive naturals, for example, 613876 + ... + 893781.

It is an arithmetic number, because the mean of its divisors is an integer number (19186455708).

Almost surely, 2^211001120121 is an apocalyptic number.

It is an amenable number.

211001120121 is a deficient number, since it is larger than the sum of its proper divisors (95982171207).

211001120121 is a wasteful number, since it uses less digits than its factorization.

211001120121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1511912.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 211001120121 its reverse (121021100112), we get a palindrome (332022220233).

The spelling of 211001120121 in words is "two hundred eleven billion, one million, one hundred twenty thousand, one hundred twenty-one".