201115216 has 10 divisors (see below), whose sum is σ = 389660762. Its totient is φ = 100557600.

The previous prime is 201115177. The next prime is 201115217. The reversal of 201115216 is 612511102.

It can be written as a sum of positive squares in only one way, i.e., 138768400 + 62346816 = 11780^2 + 7896^2 .

It is a junction number, because it is equal to n+sod(n) for n = 201115193 and 201115202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201115217) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6284835 + ... + 6284866.

Almost surely, 2^201115216 is an apocalyptic number.

It is an amenable number.

201115216 is a deficient number, since it is larger than the sum of its proper divisors (188545546).

201115216 is a wasteful number, since it uses less digits than its factorization.

201115216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12569709 (or 12569703 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 19.

The square root of 201115216 is about 14181.5096516556. The cubic root of 201115216 is about 585.8885039886. Note that the first 3 decimals are identical.

Adding to 201115216 its reverse (612511102), we get a palindrome (813626318).

The spelling of 201115216 in words is "two hundred one million, one hundred fifteen thousand, two hundred sixteen".