216229503 has 12 divisors (see below), whose sum is σ = 335376600. Its totient is φ = 123559632.

The previous prime is 216229483. The next prime is 216229523. The reversal of 216229503 is 305922612.

It is an interprime number because it is at equal distance from previous prime (216229483) and next prime (216229523).

It is not a de Polignac number, because 216229503 - 2¹⁰ = 216228479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216229523) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 735328 + ... + 735621.

It is an arithmetic number, because the mean of its divisors is an integer number (27948050).

Almost surely, 2^216229503 is an apocalyptic number.

216229503 is a deficient number, since it is larger than the sum of its proper divisors (119147097).

216229503 is a wasteful number, since it uses less digits than its factorization.

216229503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1470966 (or 1470959 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 216229503 is about 14704.7442344299. The cubic root of 216229503 is about 600.2124275598.

It can be divided in two parts, 21622 and 9503, that added together give a triangular number (31125 = T₂₄₉).

The spelling of 216229503 in words is "two hundred sixteen million, two hundred twenty-nine thousand, five hundred three".