216263101 has 4 divisors (see below), whose sum is σ = 216437500. Its totient is φ = 216088704.

The previous prime is 216263083. The next prime is 216263123. The reversal of 216263101 is 101362612.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 95043001 + 121220100 = 9749^2 + 11010^2 .

It is a cyclic number.

It is not a de Polignac number, because 216263101 - 2²⁷ = 82045373 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (216293101) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 85326 + ... + 87823.

It is an arithmetic number, because the mean of its divisors is an integer number (54109375).

Almost surely, 2^216263101 is an apocalyptic number.

It is an amenable number.

216263101 is a deficient number, since it is larger than the sum of its proper divisors (174399).

216263101 is a wasteful number, since it uses less digits than its factorization.

216263101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174398.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 216263101 is about 14705.8866104700. The cubic root of 216263101 is about 600.2435131925.

The spelling of 216263101 in words is "two hundred sixteen million, two hundred sixty-three thousand, one hundred one".