212000111121 has 16 divisors (see below), whose sum is σ = 294639401024. Its totient is φ = 135461139264.

The previous prime is 212000111117. The next prime is 212000111123. The reversal of 212000111121 is 121111000212.

It is not a de Polignac number, because 212000111121 - 2² = 212000111117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212000111097 and 212000111106.

It is not an unprimeable number, because it can be changed into a prime (212000111123) 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, 14245630 + ... + 14260503.

It is an arithmetic number, because the mean of its divisors is an integer number (18414962564).

Almost surely, 2^212000111121 is an apocalyptic number.

It is an amenable number.

212000111121 is a deficient number, since it is larger than the sum of its proper divisors (82639289903).

212000111121 is a wasteful number, since it uses less digits than its factorization.

212000111121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28506240.

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

Adding to 212000111121 its reverse (121111000212), we get a palindrome (333111111333).

The spelling of 212000111121 in words is "two hundred twelve billion, one hundred eleven thousand, one hundred twenty-one".