121700667 has 32 divisors (see below), whose sum is σ = 181958400. Its totient is φ = 71726720.

The previous prime is 121700653. The next prime is 121700701. The reversal of 121700667 is 766007121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121700667 - 2⁴ = 121700651 is a prime.

It is a super-2 number, since 2×121700667² = 29622104696489778, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (121700167) 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 31 ways as a sum of consecutive naturals, for example, 260368 + ... + 260834.

It is an arithmetic number, because the mean of its divisors is an integer number (5686200).

Almost surely, 2^121700667 is an apocalyptic number.

121700667 is a deficient number, since it is larger than the sum of its proper divisors (60257733).

121700667 is a wasteful number, since it uses less digits than its factorization.

121700667 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683.

The product of its (nonzero) digits is 3528, while the sum is 30.

The square root of 121700667 is about 11031.8025272391. The cubic root of 121700667 is about 495.5616072508.

Adding to 121700667 its reverse (766007121), we get a palindrome (887707788).

The spelling of 121700667 in words is "one hundred twenty-one million, seven hundred thousand, six hundred sixty-seven".