121243051641 has 8 divisors (see below), whose sum is σ = 165600265824. Its totient is φ = 78857269280.

The previous prime is 121243051637. The next prime is 121243051661. The reversal of 121243051641 is 146150342121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121243051641 - 2² = 121243051637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121243051599 and 121243051608.

It is not an unprimeable number, because it can be changed into a prime (121243051661) 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 7 ways as a sum of consecutive naturals, for example, 492857811 + ... + 492858056.

It is an arithmetic number, because the mean of its divisors is an integer number (20700033228).

Almost surely, 2^121243051641 is an apocalyptic number.

It is an amenable number.

121243051641 is a deficient number, since it is larger than the sum of its proper divisors (44357214183).

121243051641 is an equidigital number, since it uses as much as digits as its factorization.

121243051641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 985715911.

The product of its (nonzero) digits is 5760, while the sum is 30.

Adding to 121243051641 its reverse (146150342121), we get a palindrome (267393393762).

The spelling of 121243051641 in words is "one hundred twenty-one billion, two hundred forty-three million, fifty-one thousand, six hundred forty-one".