212505141 has 8 divisors (see below), whose sum is σ = 285242400. Its totient is φ = 140718992.

The previous prime is 212505133. The next prime is 212505157. The reversal of 212505141 is 141505212.

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 212505141 - 2³ = 212505133 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212505121) 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 7 ways as a sum of consecutive naturals, for example, 237255 + ... + 238148.

It is an arithmetic number, because the mean of its divisors is an integer number (35655300).

Almost surely, 2^212505141 is an apocalyptic number.

It is an amenable number.

212505141 is a deficient number, since it is larger than the sum of its proper divisors (72737259).

212505141 is a wasteful number, since it uses less digits than its factorization.

212505141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475555.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 212505141 is about 14577.5560708920. The cubic root of 212505141 is about 596.7464082363.

The spelling of 212505141 in words is "two hundred twelve million, five hundred five thousand, one hundred forty-one".