121700775 has 48 divisors (see below), whose sum is σ = 233913600. Its totient is φ = 54677760.

The previous prime is 121700771. The next prime is 121700779. The reversal of 121700775 is 577007121.

It is an interprime number because it is at equal distance from previous prime (121700771) and next prime (121700779).

It is not a de Polignac number, because 121700775 - 2² = 121700771 is a prime.

It is a super-2 number, since 2×121700775² = 29622157271201250, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121700771) 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 47 ways as a sum of consecutive naturals, for example, 29011 + ... + 32939.

It is an arithmetic number, because the mean of its divisors is an integer number (4873200).

Almost surely, 2^121700775 is an apocalyptic number.

121700775 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

121700775 is a deficient number, since it is larger than the sum of its proper divisors (112212825).

121700775 is a wasteful number, since it uses less digits than its factorization.

121700775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4008 (or 4003 counting only the distinct ones).

The product of its (nonzero) digits is 3430, while the sum is 30.

The square root of 121700775 is about 11031.8074221770. The cubic root of 121700775 is about 495.5617538417.

Adding to 121700775 its reverse (577007121), we get a palindrome (698707896).

The spelling of 121700775 in words is "one hundred twenty-one million, seven hundred thousand, seven hundred seventy-five".