1000122100001 has 4 divisors (see below), whose sum is σ = 1000129617600. Its totient is φ = 1000114582404.

The previous prime is 1000122099931. The next prime is 1000122100009. The reversal of 1000122100001 is 1000012210001.

1000122100001 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1000122100001 - 2³⁴ = 982942230817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1000122100009) 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, 3555581 + ... + 3826538.

It is an arithmetic number, because the mean of its divisors is an integer number (250032404400).

Almost surely, 2^{1000122100001} is an apocalyptic number.

It is an amenable number.

1000122100001 is a deficient number, since it is larger than the sum of its proper divisors (7517599).

1000122100001 is an equidigital number, since it uses as much as digits as its factorization.

1000122100001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7517598.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 1000122100001 its reverse (1000012210001), we get a palindrome (2000134310002).

It can be divided in two parts, 100012210000 and 1, that added together give a palindrome (100012210001).

The spelling of 1000122100001 in words is "one trillion, one hundred twenty-two million, one hundred thousand, one".