10123001221001 has 4 divisors (see below), whose sum is σ = 10123117088532. Its totient is φ = 10122885353472.

The previous prime is 10123001220967. The next prime is 10123001221007. The reversal of 10123001221001 is 10012210032101.

10123001221001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8270887087225 + 1852114133776 = 2875915^2 + 1360924^2 .

It is a cyclic number.

It is not a de Polignac number, because 10123001221001 - 2¹⁰ = 10123001219977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10123001221007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57802616 + ... + 57977481.

It is an arithmetic number, because the mean of its divisors is an integer number (2530779272133).

Almost surely, 2^{10123001221001} is an apocalyptic number.

It is an amenable number.

10123001221001 is a deficient number, since it is larger than the sum of its proper divisors (115867531).

10123001221001 is an equidigital number, since it uses as much as digits as its factorization.

10123001221001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115867530.

The product of its (nonzero) digits is 24, while the sum is 14.

Adding to 10123001221001 its reverse (10012210032101), we get a palindrome (20135211253102).

The spelling of 10123001221001 in words is "ten trillion, one hundred twenty-three billion, one million, two hundred twenty-one thousand, one".