121331266 has 8 divisors (see below), whose sum is σ = 207996480. Its totient is φ = 51999108.

The previous prime is 121331239. The next prime is 121331267. The reversal of 121331266 is 662133121.

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

It is a super-2 number, since 2×121331266² = 29442552218325512, 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 121331266.

It is not an unprimeable number, because it can be changed into a prime (121331267) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4333246 + ... + 4333273.

It is an arithmetic number, because the mean of its divisors is an integer number (25999560).

Almost surely, 2^121331266 is an apocalyptic number.

121331266 is a deficient number, since it is larger than the sum of its proper divisors (86665214).

121331266 is an equidigital number, since it uses as much as digits as its factorization.

121331266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8666528.

The product of its digits is 1296, while the sum is 25.

The square root of 121331266 is about 11015.0472536435. The cubic root of 121331266 is about 495.0597023524.

Adding to 121331266 its reverse (662133121), we get a palindrome (783464387).

The spelling of 121331266 in words is "one hundred twenty-one million, three hundred thirty-one thousand, two hundred sixty-six".