101606215 has 4 divisors (see below), whose sum is σ = 121927464. Its totient is φ = 81284968.

The previous prime is 101606209. The next prime is 101606221. The reversal of 101606215 is 512606101.

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

It is an interprime number because it is at equal distance from previous prime (101606209) and next prime (101606221).

It is a cyclic number.

It is not a de Polignac number, because 101606215 - 2³ = 101606207 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10160617 + ... + 10160626.

It is an arithmetic number, because the mean of its divisors is an integer number (30481866).

Almost surely, 2^101606215 is an apocalyptic number.

101606215 is a deficient number, since it is larger than the sum of its proper divisors (20321249).

101606215 is an equidigital number, since it uses as much as digits as its factorization.

101606215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20321248.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 101606215 is about 10079.9908234085. The cubic root of 101606215 is about 466.6308251952.

The spelling of 101606215 in words is "one hundred one million, six hundred six thousand, two hundred fifteen".