212010212121 has 8 divisors (see below), whose sum is σ = 290320290624. Its totient is φ = 137520137520.

The previous prime is 212010212087. The next prime is 212010212137. The reversal of 212010212121 is 121212010212.

212010212121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 212010212121 - 2³¹ = 209862728473 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 212010212121.

It is not an unprimeable number, because it can be changed into a prime (212010212321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 955000845 + ... + 955001066.

It is an arithmetic number, because the mean of its divisors is an integer number (36290036328).

Almost surely, 2^212010212121 is an apocalyptic number.

It is an amenable number.

212010212121 is a deficient number, since it is larger than the sum of its proper divisors (78310078503).

212010212121 is a wasteful number, since it uses less digits than its factorization.

212010212121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1910001951.

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

Adding to 212010212121 its reverse (121212010212), we get a palindrome (333222222333).

It can be divided in two parts, 212010212 and 121, that multiplied together give a palindrome (25653235652).

The spelling of 212010212121 in words is "two hundred twelve billion, ten million, two hundred twelve thousand, one hundred twenty-one".