101011001010001 has 4 divisors (see below), whose sum is σ = 101011059630900. Its totient is φ = 101010942389104.

The previous prime is 101011001009909. The next prime is 101011001010013. The reversal of 101011001010001 is 100010100110101.

It is a happy number.

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 69335997926976 + 31675003083025 = 8326824^2 + 5628055^2 .

It is a cyclic number.

It is not a de Polignac number, because 101011001010001 - 2³¹ = 101008853526353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (101011001010071) 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, 26644966 + ... + 30198943.

It is an arithmetic number, because the mean of its divisors is an integer number (25252764907725).

Almost surely, 2^{101011001010001} is an apocalyptic number.

It is an amenable number.

101011001010001 is a deficient number, since it is larger than the sum of its proper divisors (58620899).

101011001010001 is an equidigital number, since it uses as much as digits as its factorization.

101011001010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58620898.

The product of its (nonzero) digits is 1, while the sum is 7.

Adding to 101011001010001 its reverse (100010100110101), we get a palindrome (201021101120102).

The spelling of 101011001010001 in words is "one hundred one trillion, eleven billion, one million, ten thousand, one".