212811085342 has 4 divisors (see below), whose sum is σ = 319216628016. Its totient is φ = 106405542670.

The previous prime is 212811085327. The next prime is 212811085343. The reversal of 212811085342 is 243580118212.

It is a happy number.

212811085342 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212811085343) 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 as a sum of consecutive naturals, namely, 53202771334 + ... + 53202771337.

It is an arithmetic number, because the mean of its divisors is an integer number (79804157004).

Almost surely, 2^212811085342 is an apocalyptic number.

212811085342 is a deficient number, since it is larger than the sum of its proper divisors (106405542674).

212811085342 is a wasteful number, since it uses less digits than its factorization.

212811085342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106405542673.

The product of its (nonzero) digits is 30720, while the sum is 37.

The spelling of 212811085342 in words is "two hundred twelve billion, eight hundred eleven million, eighty-five thousand, three hundred forty-two".