216103100 has 18 divisors (see below), whose sum is σ = 468943944. Its totient is φ = 86441200.

The previous prime is 216103091. The next prime is 216103103. The reversal of 216103100 is 1301612.

It is a super-2 number, since 2×216103100² = 93401099659220000, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216103103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1080416 + ... + 1080615.

Almost surely, 2^216103100 is an apocalyptic number.

216103100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

216103100 is an abundant number, since it is smaller than the sum of its proper divisors (252840844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

216103100 is a wasteful number, since it uses less digits than its factorization.

216103100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2161045 (or 2161038 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 216103100 is about 14700.4455714784. The cubic root of 216103100 is about 600.0954477784.

Adding to 216103100 its reverse (1301612), we get a palindrome (217404712).

The spelling of 216103100 in words is "two hundred sixteen million, one hundred three thousand, one hundred".