101206666 has 16 divisors (see below), whose sum is σ = 167946048. Its totient is φ = 45354400.

The previous prime is 101206643. The next prime is 101206669. The reversal of 101206666 is 666602101.

It is not an unprimeable number, because it can be changed into a prime (101206669) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30835 + ... + 33958.

It is an arithmetic number, because the mean of its divisors is an integer number (10496628).

Almost surely, 2^101206666 is an apocalyptic number.

101206666 is a deficient number, since it is larger than the sum of its proper divisors (66739382).

101206666 is a wasteful number, since it uses less digits than its factorization.

101206666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64877.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 101206666 is about 10060.1523845318. The cubic root of 101206666 is about 466.0183731635.

Adding to 101206666 its reverse (666602101), we get a palindrome (767808767).

It can be divided in two parts, 10120 and 6666, that multiplied together give a triangular number (67459920 = T₁₁₆₁₅).

The spelling of 101206666 in words is "one hundred one million, two hundred six thousand, six hundred sixty-six".