212112002121 has 8 divisors (see below), whose sum is σ = 282854736864. Its totient is φ = 141388634400.

The previous prime is 212112002107. The next prime is 212112002131. The reversal of 212112002121 is 121200211212.

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

It is not a de Polignac number, because 212112002121 - 2⁹ = 212112001609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212112002121.

It is not an unprimeable number, because it can be changed into a prime (212112002131) 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 7 ways as a sum of consecutive naturals, for example, 4816180 + ... + 4860021.

It is an arithmetic number, because the mean of its divisors is an integer number (35356842108).

Almost surely, 2^212112002121 is an apocalyptic number.

It is an amenable number.

212112002121 is a deficient number, since it is larger than the sum of its proper divisors (70742734743).

212112002121 is an equidigital number, since it uses as much as digits as its factorization.

212112002121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9683511.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 212112002121 its reverse (121200211212), we get a palindrome (333312213333).

The spelling of 212112002121 in words is "two hundred twelve billion, one hundred twelve million, two thousand, one hundred twenty-one".