121761231347 has 8 divisors (see below), whose sum is σ = 140719240800. Its totient is φ = 103194108864.

The previous prime is 121761231343. The next prime is 121761231401. The reversal of 121761231347 is 743132167121.

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

It is not a de Polignac number, because 121761231347 - 2² = 121761231343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121761231347.

It is not an unprimeable number, because it can be changed into a prime (121761231343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97721072 + ... + 97722317.

It is an arithmetic number, because the mean of its divisors is an integer number (17589905100).

Almost surely, 2^121761231347 is an apocalyptic number.

121761231347 is a deficient number, since it is larger than the sum of its proper divisors (18958009453).

121761231347 is an equidigital number, since it uses as much as digits as its factorization.

121761231347 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195443485.

The product of its digits is 42336, while the sum is 38.

Adding to 121761231347 its reverse (743132167121), we get a palindrome (864893398468).

The spelling of 121761231347 in words is "one hundred twenty-one billion, seven hundred sixty-one million, two hundred thirty-one thousand, three hundred forty-seven".