121288787748 has 48 divisors (see below), whose sum is σ = 317337328000. Its totient is φ = 40058678304.

The previous prime is 121288787723. The next prime is 121288787749. The reversal of 121288787748 is 847787882121.

It is not an unprimeable number, because it can be changed into a prime (121288787749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5139808 + ... + 5163351.

Almost surely, 2^121288787748 is an apocalyptic number.

121288787748 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

121288787748 is an abundant number, since it is smaller than the sum of its proper divisors (196048540252).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121288787748 is a wasteful number, since it uses less digits than its factorization.

121288787748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10303281 (or 10303273 counting only the distinct ones).

The product of its digits is 22478848, while the sum is 63.

The spelling of 121288787748 in words is "one hundred twenty-one billion, two hundred eighty-eight million, seven hundred eighty-seven thousand, seven hundred forty-eight".