121774663 has 4 divisors (see below), whose sum is σ = 122224288. Its totient is φ = 121325040.

The previous prime is 121774661. The next prime is 121774669. The reversal of 121774663 is 366477121.

121774663 is nontrivially palindromic in base 16.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 366477121 = 83 ⋅4415387.

It is a cyclic number.

It is not a de Polignac number, because 121774663 - 2¹ = 121774661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121774661) 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 3 ways as a sum of consecutive naturals, for example, 224406 + ... + 224947.

It is an arithmetic number, because the mean of its divisors is an integer number (30556072).

Almost surely, 2^121774663 is an apocalyptic number.

121774663 is a deficient number, since it is larger than the sum of its proper divisors (449625).

121774663 is an equidigital number, since it uses as much as digits as its factorization.

121774663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449624.

The product of its digits is 42336, while the sum is 37.

The square root of 121774663 is about 11035.1557759734. The cubic root of 121774663 is about 495.6620234282.

The spelling of 121774663 in words is "one hundred twenty-one million, seven hundred seventy-four thousand, six hundred sixty-three".