121967707 has 24 divisors (see below), whose sum is σ = 141102000. Its totient is φ = 104767488.

The previous prime is 121967693. The next prime is 121967711. The reversal of 121967707 is 707769121.

It is a de Polignac number, because none of the positive numbers 2^k-121967707 is a prime.

It is a super-2 number, since 2×121967707² = 29752243101675698, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121967707.

It is not an unprimeable number, because it can be changed into a prime (121967717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 271419 + ... + 271867.

It is an arithmetic number, because the mean of its divisors is an integer number (5879250).

Almost surely, 2^121967707 is an apocalyptic number.

121967707 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

121967707 is a deficient number, since it is larger than the sum of its proper divisors (19134293).

121967707 is a wasteful number, since it uses less digits than its factorization.

121967707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543 (or 514 counting only the distinct ones).

The product of its (nonzero) digits is 37044, while the sum is 40.

The square root of 121967707 is about 11043.8990850152. The cubic root of 121967707 is about 495.9238021930.

The spelling of 121967707 in words is "one hundred twenty-one million, nine hundred sixty-seven thousand, seven hundred seven".