121700512 has 12 divisors (see below), whose sum is σ = 239597946. Its totient is φ = 60850240.

The previous prime is 121700507. The next prime is 121700533. The reversal of 121700512 is 215007121.

It can be written as a sum of positive squares in only one way, i.e., 93779856 + 27920656 = 9684^2 + 5284^2 .

It is a super-2 number, since 2×121700512² = 29622029242124288, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121700512.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1901539 + ... + 1901602.

Almost surely, 2^121700512 is an apocalyptic number.

It is an amenable number.

121700512 is a deficient number, since it is larger than the sum of its proper divisors (117897434).

121700512 is an equidigital number, since it uses as much as digits as its factorization.

121700512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3803151 (or 3803143 counting only the distinct ones).

The product of its (nonzero) digits is 140, while the sum is 19.

The square root of 121700512 is about 11031.7955020930. The cubic root of 121700512 is about 495.5613968655.

Adding to 121700512 its reverse (215007121), we get a palindrome (336707633).

The spelling of 121700512 in words is "one hundred twenty-one million, seven hundred thousand, five hundred twelve".