212001011121 has 8 divisors (see below), whose sum is σ = 299295545184. Its totient is φ = 133020242240.

The previous prime is 212001011113. The next prime is 212001011203. The reversal of 212001011121 is 121110100212.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 212001011121 - 2³ = 212001011113 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212001011097 and 212001011106.

It is not an unprimeable number, because it can be changed into a prime (212001011111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2078441235 + ... + 2078441336.

It is an arithmetic number, because the mean of its divisors is an integer number (37411943148).

Almost surely, 2^212001011121 is an apocalyptic number.

It is an amenable number.

212001011121 is a deficient number, since it is larger than the sum of its proper divisors (87294534063).

212001011121 is a wasteful number, since it uses less digits than its factorization.

212001011121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4156882591.

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

Adding to 212001011121 its reverse (121110100212), we get a palindrome (333111111333).

The spelling of 212001011121 in words is "two hundred twelve billion, one million, eleven thousand, one hundred twenty-one".