121712270 has 8 divisors (see below), whose sum is σ = 219082104. Its totient is φ = 48684904.

The previous prime is 121712257. The next prime is 121712273. The reversal of 121712270 is 72217121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121712273) 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 3 ways as a sum of consecutive naturals, for example, 6085604 + ... + 6085623.

It is an arithmetic number, because the mean of its divisors is an integer number (27385263).

Almost surely, 2^121712270 is an apocalyptic number.

121712270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121712270 is a deficient number, since it is larger than the sum of its proper divisors (97369834).

121712270 is a wasteful number, since it uses less digits than its factorization.

121712270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12171234.

The product of its (nonzero) digits is 392, while the sum is 23.

The square root of 121712270 is about 11032.3284033789. The cubic root of 121712270 is about 495.5773557774.

Adding to 121712270 its reverse (72217121), we get a palindrome (193929391).

It can be divided in two parts, 12171 and 2270, that added together give a palindrome (14441).

The spelling of 121712270 in words is "one hundred twenty-one million, seven hundred twelve thousand, two hundred seventy".