2001010101 has 8 divisors (see below), whose sum is σ = 2724779904. Its totient is φ = 1305623520.

The previous prime is 2001010093. The next prime is 2001010127. The reversal of 2001010101 is 1010101002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2001010101 - 2³ = 2001010093 is a prime.

2001010101 is a modest number, since divided by 10101 gives 2001 as remainder.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2001010101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001010001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7095640 + ... + 7095921.

It is an arithmetic number, because the mean of its divisors is an integer number (340597488).

Almost surely, 2^2001010101 is an apocalyptic number.

It is an amenable number.

2001010101 is a deficient number, since it is larger than the sum of its proper divisors (723769803).

2001010101 is a wasteful number, since it uses less digits than its factorization.

2001010101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14191611.

The product of its (nonzero) digits is 2, while the sum is 6.

The square root of 2001010101 is about 44732.6513969382. The cubic root of 2001010101 is about 1260.1331221152.

Adding to 2001010101 its reverse (1010101002), we get a palindrome (3011111103).

Subtracting from 2001010101 its reverse (1010101002), we obtain a palindrome (990909099).

The spelling of 2001010101 in words is "two billion, one million, ten thousand, one hundred one".