121040825747 has 4 divisors (see below), whose sum is σ = 121049333496. Its totient is φ = 121032318000.

The previous prime is 121040825723. The next prime is 121040825761. The reversal of 121040825747 is 747528040121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121040825747 - 2¹² = 121040821651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121040425747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4232498 + ... + 4260999.

It is an arithmetic number, because the mean of its divisors is an integer number (30262333374).

Almost surely, 2^121040825747 is an apocalyptic number.

121040825747 is a deficient number, since it is larger than the sum of its proper divisors (8507749).

121040825747 is an equidigital number, since it uses as much as digits as its factorization.

121040825747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8507748.

The product of its (nonzero) digits is 125440, while the sum is 41.

Adding to 121040825747 its reverse (747528040121), we get a palindrome (868568865868).

The spelling of 121040825747 in words is "one hundred twenty-one billion, forty million, eight hundred twenty-five thousand, seven hundred forty-seven".