212561133 has 8 divisors (see below), whose sum is σ = 283483200. Its totient is φ = 141673248.

The previous prime is 212561131. The next prime is 212561143. The reversal of 212561133 is 331165212.

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

It is not a de Polignac number, because 212561133 - 2¹ = 212561131 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212561131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16233 + ... + 26241.

It is an arithmetic number, because the mean of its divisors is an integer number (35435400).

Almost surely, 2^212561133 is an apocalyptic number.

It is an amenable number.

212561133 is a deficient number, since it is larger than the sum of its proper divisors (70922067).

212561133 is a wasteful number, since it uses less digits than its factorization.

212561133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17091.

The product of its digits is 1080, while the sum is 24.

The square root of 212561133 is about 14579.4764309285. The cubic root of 212561133 is about 596.7988149539.

The spelling of 212561133 in words is "two hundred twelve million, five hundred sixty-one thousand, one hundred thirty-three".