2011232132221 has 12 divisors (see below), whose sum is σ = 2202031686036. Its totient is φ = 1826087137920.

The previous prime is 2011232132219. The next prime is 2011232132233. The reversal of 2011232132221 is 1222312321102.

It can be written as a sum of positive squares in 6 ways, for example, as 368310616996 + 1642921515225 = 606886^2 + 1281765^2 .

It is not a de Polignac number, because 2011232132221 - 2¹ = 2011232132219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2011232132192 and 2011232132201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011232132201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 20740416 + ... + 20837161.

It is an arithmetic number, because the mean of its divisors is an integer number (183502640503).

Almost surely, 2^{2011232132221} is an apocalyptic number.

It is an amenable number.

2011232132221 is a deficient number, since it is larger than the sum of its proper divisors (190799553815).

2011232132221 is an equidigital number, since it uses as much as digits as its factorization.

2011232132221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41577712 (or 41577651 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 2011232132221 its reverse (1222312321102), we get a palindrome (3233544453323).

The spelling of 2011232132221 in words is "two trillion, eleven billion, two hundred thirty-two million, one hundred thirty-two thousand, two hundred twenty-one".