212120995816 has 16 divisors (see below), whose sum is σ = 415019340000. Its totient is φ = 101449171824.

The previous prime is 212120995811. The next prime is 212120995817. The reversal of 212120995816 is 618599021212.

It is a happy number.

212120995816 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×212120995816³ (a number of 35 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (46).

It is not an unprimeable number, because it can be changed into a prime (212120995811) 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, 576415566 + ... + 576415933.

It is an arithmetic number, because the mean of its divisors is an integer number (25938708750).

Almost surely, 2^212120995816 is an apocalyptic number.

It is an amenable number.

212120995816 is a deficient number, since it is larger than the sum of its proper divisors (202898344184).

212120995816 is a wasteful number, since it uses less digits than its factorization.

212120995816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1152831528 (or 1152831524 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 46.

The spelling of 212120995816 in words is "two hundred twelve billion, one hundred twenty million, nine hundred ninety-five thousand, eight hundred sixteen".