10121501205 has 40 divisors (see below), whose sum is σ = 18399325824. Its totient is φ = 5322088800.

The previous prime is 10121501177. The next prime is 10121501249. The reversal of 10121501205 is 50210512101.

10121501205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 10121501205 - 2¹² = 10121497109 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 147241 + ... + 204750.

Almost surely, 2^10121501205 is an apocalyptic number.

10121501205 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

10121501205 is a deficient number, since it is larger than the sum of its proper divisors (8277824619).

10121501205 is an equidigital number, since it uses as much as digits as its factorization.

10121501205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352079 (or 352070 counting only the distinct ones).

The product of its (nonzero) digits is 100, while the sum is 18.

The spelling of 10121501205 in words is "ten billion, one hundred twenty-one million, five hundred one thousand, two hundred five".