212051070 has 192 divisors, whose sum is σ = 706807296. Its totient is φ = 42819840.

The previous prime is 212051029. The next prime is 212051071. The reversal of 212051070 is 70150212.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212051071) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 255997 + ... + 256823.

It is an arithmetic number, because the mean of its divisors is an integer number (3681288).

Almost surely, 2^212051070 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212051070, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (353403648).

212051070 is an abundant number, since it is smaller than the sum of its proper divisors (494756226).

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

212051070 is a wasteful number, since it uses less digits than its factorization.

212051070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 895 (or 892 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 18.

The square root of 212051070 is about 14561.9734239560. The cubic root of 212051070 is about 596.3210719178.

The spelling of 212051070 in words is "two hundred twelve million, fifty-one thousand, seventy".