2011332121 has 4 divisors (see below), whose sum is σ = 2060389044. Its totient is φ = 1962275200.

The previous prime is 2011332119. The next prime is 2011332137. The reversal of 2011332121 is 1212331102.

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 486820096 + 1524512025 = 22064^2 + 39045^2 .

It is a cyclic number.

It is not a de Polignac number, because 2011332121 - 2¹ = 2011332119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2011332095 and 2011332104.

It is not an unprimeable number, because it can be changed into a prime (2011332721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24528400 + ... + 24528481.

It is an arithmetic number, because the mean of its divisors is an integer number (515097261).

Almost surely, 2^2011332121 is an apocalyptic number.

It is an amenable number.

2011332121 is a deficient number, since it is larger than the sum of its proper divisors (49056923).

2011332121 is an equidigital number, since it uses as much as digits as its factorization.

2011332121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49056922.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2011332121 is about 44847.8775529010. The cubic root of 2011332121 is about 1262.2961659747.

Adding to 2011332121 its reverse (1212331102), we get a palindrome (3223663223).

The spelling of 2011332121 in words is "two billion, eleven million, three hundred thirty-two thousand, one hundred twenty-one".