121241356 has 24 divisors (see below), whose sum is σ = 224732480. Its totient is φ = 57071952.

The previous prime is 121241333. The next prime is 121241357. The reversal of 121241356 is 653142121.

It is a happy number.

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 121241356.

It is not an unprimeable number, because it can be changed into a prime (121241357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7495 + ... + 17281.

Almost surely, 2^121241356 is an apocalyptic number.

It is an amenable number.

121241356 is a deficient number, since it is larger than the sum of its proper divisors (103491124).

121241356 is a wasteful number, since it uses less digits than its factorization.

121241356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9973 (or 9971 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

The square root of 121241356 is about 11010.9652619559. The cubic root of 121241356 is about 494.9373875844.

Adding to 121241356 its reverse (653142121), we get a palindrome (774383477).

The spelling of 121241356 in words is "one hundred twenty-one million, two hundred forty-one thousand, three hundred fifty-six".