2012011101 has 6 divisors (see below), whose sum is σ = 2906238270. Its totient is φ = 1341340728.

The previous prime is 2012011093. The next prime is 2012011121. The reversal of 2012011101 is 1011102102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 2011522500 + 488601 = 44850^2 + 699^2 .

It is not a de Polignac number, because 2012011101 - 2³ = 2012011093 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9), and also a Moran number because the ratio is a prime number: 223556789 = 2012011101 / (2 + 0 + 1 + 2 + 0 + 1 + 1 + 1 + 0 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012011121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 111778386 + ... + 111778403.

It is an arithmetic number, because the mean of its divisors is an integer number (484373045).

Almost surely, 2^2012011101 is an apocalyptic number.

It is an amenable number.

2012011101 is a deficient number, since it is larger than the sum of its proper divisors (894227169).

2012011101 is a wasteful number, since it uses less digits than its factorization.

2012011101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223556795 (or 223556792 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

The square root of 2012011101 is about 44855.4467261223. The cubic root of 2012011101 is about 1262.4381908243.

Adding to 2012011101 its reverse (1011102102), we get a palindrome (3023113203).

The spelling of 2012011101 in words is "two billion, twelve million, eleven thousand, one hundred one".