2011312101 has 4 divisors (see below), whose sum is σ = 2681749472. Its totient is φ = 1340874732.

The previous prime is 2011312087. The next prime is 2011312123. The reversal of 2011312101 is 1012131102.

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 not a de Polignac number, because 2011312101 - 2¹¹ = 2011310053 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011312201) 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, 335218681 + ... + 335218686.

It is an arithmetic number, because the mean of its divisors is an integer number (670437368).

Almost surely, 2^2011312101 is an apocalyptic number.

It is an amenable number.

2011312101 is a deficient number, since it is larger than the sum of its proper divisors (670437371).

2011312101 is an equidigital number, since it uses as much as digits as its factorization.

2011312101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670437370.

The product of its (nonzero) digits is 12, while the sum is 12.

The square root of 2011312101 is about 44847.6543533773. The cubic root of 2011312101 is about 1262.2919778295.

Adding to 2011312101 its reverse (1012131102), we get a palindrome (3023443203).

The spelling of 2011312101 in words is "two billion, eleven million, three hundred twelve thousand, one hundred one".