121806886 has 16 divisors (see below), whose sum is σ = 188220384. Its totient is φ = 59076864.

The previous prime is 121806869. The next prime is 121806889. The reversal of 121806886 is 688608121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121806889) 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, 23791 + ... + 28453.

It is an arithmetic number, because the mean of its divisors is an integer number (11763774).

Almost surely, 2^121806886 is an apocalyptic number.

121806886 is a deficient number, since it is larger than the sum of its proper divisors (66413498).

121806886 is a wasteful number, since it uses less digits than its factorization.

121806886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5055.

The product of its (nonzero) digits is 36864, while the sum is 40.

The square root of 121806886 is about 11036.6156950399. The cubic root of 121806886 is about 495.7057388952.

The spelling of 121806886 in words is "one hundred twenty-one million, eight hundred six thousand, eight hundred eighty-six".