212170512 has 20 divisors (see below), whose sum is σ = 548107280. Its totient is φ = 70723488.

The previous prime is 212170459. The next prime is 212170513. The reversal of 212170512 is 215071212.

It is not an unprimeable number, because it can be changed into a prime (212170513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2210062 + ... + 2210157.

It is an arithmetic number, because the mean of its divisors is an integer number (27405364).

Almost surely, 2^212170512 is an apocalyptic number.

It is an amenable number.

212170512 is an abundant number, since it is smaller than the sum of its proper divisors (335936768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212170512 is a wasteful number, since it uses less digits than its factorization.

212170512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4420230 (or 4420224 counting only the distinct ones).

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 212170512 is about 14566.0740077757. The cubic root of 212170512 is about 596.4330141534.

The spelling of 212170512 in words is "two hundred twelve million, one hundred seventy thousand, five hundred twelve".