121670707 has 4 divisors (see below), whose sum is σ = 122852080. Its totient is φ = 120489336.

The previous prime is 121670701. The next prime is 121670711. The reversal of 121670707 is 707076121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 707076121 = 17 ⋅41592713.

It is a cyclic number.

It is not a de Polignac number, because 121670707 - 2⁷ = 121670579 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121670701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 590532 + ... + 590737.

It is an arithmetic number, because the mean of its divisors is an integer number (30713020).

Almost surely, 2^121670707 is an apocalyptic number.

121670707 is a deficient number, since it is larger than the sum of its proper divisors (1181373).

121670707 is a wasteful number, since it uses less digits than its factorization.

121670707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181372.

The product of its (nonzero) digits is 4116, while the sum is 31.

The square root of 121670707 is about 11030.4445513316. Note that the first 3 decimals coincide. The cubic root of 121670707 is about 495.5209384946.

The spelling of 121670707 in words is "one hundred twenty-one million, six hundred seventy thousand, seven hundred seven".