121104121251 has 8 divisors (see below), whose sum is σ = 161495286784. Its totient is φ = 80724518280.

The previous prime is 121104121217. The next prime is 121104121253. The reversal of 121104121251 is 152121401121.

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

It is not a de Polignac number, because 121104121251 - 2⁷ = 121104121123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121104121253) 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, 2866171 + ... + 2908116.

It is an arithmetic number, because the mean of its divisors is an integer number (20186910848).

Almost surely, 2^121104121251 is an apocalyptic number.

121104121251 is a deficient number, since it is larger than the sum of its proper divisors (40391165533).

121104121251 is an equidigital number, since it uses as much as digits as its factorization.

121104121251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5781281.

The product of its (nonzero) digits is 160, while the sum is 21.

Adding to 121104121251 its reverse (152121401121), we get a palindrome (273225522372).

The spelling of 121104121251 in words is "one hundred twenty-one billion, one hundred four million, one hundred twenty-one thousand, two hundred fifty-one".