212770145 has 8 divisors (see below), whose sum is σ = 291799104. Its totient is φ = 145899504.

The previous prime is 212770139. The next prime is 212770157. The reversal of 212770145 is 541077212.

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

It is a cyclic number.

It is not a de Polignac number, because 212770145 - 2¹⁰ = 212769121 is a prime.

It is a super-2 number, since 2×212770145² = 90542269206642050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3039539 + ... + 3039608.

It is an arithmetic number, because the mean of its divisors is an integer number (36474888).

Almost surely, 2^212770145 is an apocalyptic number.

It is an amenable number.

212770145 is a deficient number, since it is larger than the sum of its proper divisors (79028959).

212770145 is an equidigital number, since it uses as much as digits as its factorization.

212770145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6079159.

The product of its (nonzero) digits is 3920, while the sum is 29.

The square root of 212770145 is about 14586.6426911747. The cubic root of 212770145 is about 596.9943622290.

The spelling of 212770145 in words is "two hundred twelve million, seven hundred seventy thousand, one hundred forty-five".