212555233 has 8 divisors (see below), whose sum is σ = 245518560. Its totient is φ = 181865280.

The previous prime is 212555219. The next prime is 212555243. The reversal of 212555233 is 332555212.

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 212555233 - 2²¹ = 210458081 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212555243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 568143 + ... + 568516.

It is an arithmetic number, because the mean of its divisors is an integer number (30689820).

Almost surely, 2^212555233 is an apocalyptic number.

It is an amenable number.

212555233 is a deficient number, since it is larger than the sum of its proper divisors (32963327).

212555233 is a wasteful number, since it uses less digits than its factorization.

212555233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136687.

The product of its digits is 9000, while the sum is 28.

The square root of 212555233 is about 14579.2740902968. The cubic root of 212555233 is about 596.7932931768.

The spelling of 212555233 in words is "two hundred twelve million, five hundred fifty-five thousand, two hundred thirty-three".