212010212138 has 8 divisors (see below), whose sum is σ = 318018389700. Its totient is φ = 106004082240.

The previous prime is 212010212137. The next prime is 212010212149. The reversal of 212010212138 is 831212010212.

212010212138 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 211900946929 + 109265209 = 460327^2 + 10453^2 .

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

It is not an unprimeable number, because it can be changed into a prime (212010212137) 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 3 ways as a sum of consecutive naturals, for example, 219713 + ... + 687236.

Almost surely, 2^212010212138 is an apocalyptic number.

212010212138 is a deficient number, since it is larger than the sum of its proper divisors (106008177562).

212010212138 is a wasteful number, since it uses less digits than its factorization.

212010212138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1023832.

The product of its (nonzero) digits is 384, while the sum is 23.

The spelling of 212010212138 in words is "two hundred twelve billion, ten million, two hundred twelve thousand, one hundred thirty-eight".