1011010001 has 4 divisors (see below), whose sum is σ = 1011102900. Its totient is φ = 1010917104.

The previous prime is 1011009991. The next prime is 1011010019. The reversal of 1011010001 is 1000101101.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1000101101 = 71 ⋅14085931.

It can be written as a sum of positive squares in 2 ways, for example, as 455182225 + 555827776 = 21335^2 + 23576^2 .

It is a cyclic number.

It is not a de Polignac number, because 1011010001 - 2²² = 1006815697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011010031) 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, 27566 + ... + 52743.

It is an arithmetic number, because the mean of its divisors is an integer number (252775725).

Almost surely, 2^1011010001 is an apocalyptic number.

It is an amenable number.

1011010001 is a deficient number, since it is larger than the sum of its proper divisors (92899).

1011010001 is an equidigital number, since it uses as much as digits as its factorization.

1011010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92898.

The product of its (nonzero) digits is 1, while the sum is 5.

The square root of 1011010001 is about 31796.3834578714. The cubic root of 1011010001 is about 1003.6566132158.

Adding to 1011010001 its reverse (1000101101), we get a palindrome (2011111102).

The spelling of 1011010001 in words is "one billion, eleven million, ten thousand, one".