121112100444505 has 8 divisors (see below), whose sum is σ = 145334980103112. Its totient is φ = 96889373975808.

The previous prime is 121112100444497. The next prime is 121112100444581. The reversal of 121112100444505 is 505444001211121.

It can be written as a sum of positive squares in 4 ways, for example, as 22631941348416 + 98480159096089 = 4757304^2 + 9923717^2 .

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 121112100444505 - 2³ = 121112100444497 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36550912 + ... + 39726481.

It is an arithmetic number, because the mean of its divisors is an integer number (18166872512889).

Almost surely, 2^{121112100444505} is an apocalyptic number.

It is an amenable number.

121112100444505 is a deficient number, since it is larger than the sum of its proper divisors (24222879658607).

121112100444505 is an equidigital number, since it uses as much as digits as its factorization.

121112100444505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76594955.

The product of its (nonzero) digits is 6400, while the sum is 31.

Adding to 121112100444505 its reverse (505444001211121), we get a palindrome (626556101655626).

The spelling of 121112100444505 in words is "one hundred twenty-one trillion, one hundred twelve billion, one hundred million, four hundred forty-four thousand, five hundred five".