212030011121 has 4 divisors (see below), whose sum is σ = 212030937600. Its totient is φ = 212029084644.

The previous prime is 212030011103. The next prime is 212030011129. The reversal of 212030011121 is 121110030212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 212030011121 - 2¹⁰ = 212030010097 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212030011096 and 212030011105.

It is not an unprimeable number, because it can be changed into a prime (212030011129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155720 + ... + 669558.

It is an arithmetic number, because the mean of its divisors is an integer number (53007734400).

Almost surely, 2^212030011121 is an apocalyptic number.

It is an amenable number.

212030011121 is a deficient number, since it is larger than the sum of its proper divisors (926479).

212030011121 is an equidigital number, since it uses as much as digits as its factorization.

212030011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 926478.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 212030011121 its reverse (121110030212), we get a palindrome (333140041333).

The spelling of 212030011121 in words is "two hundred twelve billion, thirty million, eleven thousand, one hundred twenty-one".