121064805 has 12 divisors (see below), whose sum is σ = 209845740. Its totient is φ = 64567872.

The previous prime is 121064767. The next prime is 121064807. The reversal of 121064805 is 508460121.

121064805 is a `hidden beast` number, since 1 + 2 + 10 + 648 + 0 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 95238081 + 25826724 = 9759^2 + 5082^2 .

It is not a de Polignac number, because 121064805 - 2⁸ = 121064549 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121064807) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1345120 + ... + 1345209.

It is an arithmetic number, because the mean of its divisors is an integer number (17487145).

Almost surely, 2^121064805 is an apocalyptic number.

121064805 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121064805 is a deficient number, since it is larger than the sum of its proper divisors (88780935).

121064805 is a wasteful number, since it uses less digits than its factorization.

121064805 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2690340 (or 2690337 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 27.

The square root of 121064805 is about 11002.9452875128. The cubic root of 121064805 is about 494.6970291708.

The spelling of 121064805 in words is "one hundred twenty-one million, sixty-four thousand, eight hundred five".