212058861 has 16 divisors (see below), whose sum is σ = 323481600. Its totient is φ = 121047408.

The previous prime is 212058853. The next prime is 212058871. The reversal of 212058861 is 168850212.

It is not a de Polignac number, because 212058861 - 2³ = 212058853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212058841) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16960 + ... + 26678.

It is an arithmetic number, because the mean of its divisors is an integer number (20217600).

Almost surely, 2^212058861 is an apocalyptic number.

212058861 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

212058861 is a deficient number, since it is larger than the sum of its proper divisors (111422739).

212058861 is a wasteful number, since it uses less digits than its factorization.

212058861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10768.

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 212058861 is about 14562.2409333179. The cubic root of 212058861 is about 596.3283750022.

The spelling of 212058861 in words is "two hundred twelve million, fifty-eight thousand, eight hundred sixty-one".