216252233 has 4 divisors (see below), whose sum is σ = 225654528. Its totient is φ = 206849940.

The previous prime is 216252229. The next prime is 216252251. The reversal of 216252233 is 332252612.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 216252233 - 2² = 216252229 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216252133) 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 3 ways as a sum of consecutive naturals, for example, 4701113 + ... + 4701158.

It is an arithmetic number, because the mean of its divisors is an integer number (56413632).

Almost surely, 2^216252233 is an apocalyptic number.

216252233 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

216252233 is a deficient number, since it is larger than the sum of its proper divisors (9402295).

216252233 is an equidigital number, since it uses as much as digits as its factorization.

216252233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9402294.

The product of its digits is 4320, while the sum is 26.

The square root of 216252233 is about 14705.5170939345. The cubic root of 216252233 is about 600.2334582244.

The spelling of 216252233 in words is "two hundred sixteen million, two hundred fifty-two thousand, two hundred thirty-three".