200106215 has 4 divisors (see below), whose sum is σ = 240127464. Its totient is φ = 160084968.

The previous prime is 200106211. The next prime is 200106223. The reversal of 200106215 is 512601002.

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

It is a cyclic number.

It is not a de Polignac number, because 200106215 - 2² = 200106211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 200106193 and 200106202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200106211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20010617 + ... + 20010626.

It is an arithmetic number, because the mean of its divisors is an integer number (60031866).

Almost surely, 2^200106215 is an apocalyptic number.

200106215 is a deficient number, since it is larger than the sum of its proper divisors (40021249).

200106215 is an equidigital number, since it uses as much as digits as its factorization.

200106215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40021248.

The product of its (nonzero) digits is 120, while the sum is 17.

The square root of 200106215 is about 14145.8903926193. The cubic root of 200106215 is about 584.9070541695.

Adding to 200106215 its reverse (512601002), we get a palindrome (712707217).

The spelling of 200106215 in words is "two hundred million, one hundred six thousand, two hundred fifteen".