106212665 has 16 divisors (see below), whose sum is σ = 141689856. Its totient is φ = 75902400.

The previous prime is 106212653. The next prime is 106212677. The reversal of 106212665 is 566212601.

It is an interprime number because it is at equal distance from previous prime (106212653) and next prime (106212677).

It is not a de Polignac number, because 106212665 - 2¹² = 106208569 is a prime.

It is a super-2 number, since 2×106212665² = 22562260412804450, which contains 22 as substring.

It is a Smith number, since the sum of its digits (29) 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 an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24341 + ... + 28370.

It is an arithmetic number, because the mean of its divisors is an integer number (8855616).

Almost surely, 2^106212665 is an apocalyptic number.

It is an amenable number.

106212665 is a deficient number, since it is larger than the sum of its proper divisors (35477191).

106212665 is a wasteful number, since it uses less digits than its factorization.

106212665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52760.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 106212665 is about 10305.9528914118. The cubic root of 106212665 is about 473.5786356081.

The spelling of 106212665 in words is "one hundred six million, two hundred twelve thousand, six hundred sixty-five".