216212003 has 8 divisors (see below), whose sum is σ = 247188480. Its totient is φ = 185257800.

The previous prime is 216211997. The next prime is 216212021. The reversal of 216212003 is 300212612.

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

It is not a de Polignac number, because 216212003 - 2¹² = 216207907 is a prime.

It is not an unprimeable number, because it can be changed into a prime (216212063) 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, 34028 + ... + 39878.

It is an arithmetic number, because the mean of its divisors is an integer number (30898560).

Almost surely, 2^216212003 is an apocalyptic number.

216212003 is a deficient number, since it is larger than the sum of its proper divisors (30976477).

216212003 is an equidigital number, since it uses as much as digits as its factorization.

216212003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11137.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 216212003 is about 14704.1491763379. The cubic root of 216212003 is about 600.1962348869.

Adding to 216212003 its reverse (300212612), we get a palindrome (516424615).

The spelling of 216212003 in words is "two hundred sixteen million, two hundred twelve thousand, three".