121800763 has 4 divisors (see below), whose sum is σ = 139200880. Its totient is φ = 104400648.

The previous prime is 121800761. The next prime is 121800793. The reversal of 121800763 is 367008121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 367008121 = 17 ⋅21588713.

It is a cyclic number.

It is not a de Polignac number, because 121800763 - 2¹ = 121800761 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121800761) 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, 8700048 + ... + 8700061.

It is an arithmetic number, because the mean of its divisors is an integer number (34800220).

Almost surely, 2^121800763 is an apocalyptic number.

121800763 is a deficient number, since it is larger than the sum of its proper divisors (17400117).

121800763 is an equidigital number, since it uses as much as digits as its factorization.

121800763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17400116.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 121800763 is about 11036.3382967359. The cubic root of 121800763 is about 495.6974326952.

Adding to 121800763 its reverse (367008121), we get a palindrome (488808884).

The spelling of 121800763 in words is "one hundred twenty-one million, eight hundred thousand, seven hundred sixty-three".