11132231220221 has 2 divisors, whose sum is σ = 11132231220222. Its totient is φ = 11132231220220.

The previous prime is 11132231220157. The next prime is 11132231220277. The reversal of 11132231220221 is 12202213223111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6468298591225 + 4663932628996 = 2543285^2 + 2159614^2 .

It is a cyclic number.

It is not a de Polignac number, because 11132231220221 - 2⁶ = 11132231220157 is a prime.

It is a super-3 number, since 3×11132231220221³ (a number of 40 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11132231229221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5566115610110 + 5566115610111.

It is an arithmetic number, because the mean of its divisors is an integer number (5566115610111).

Almost surely, 2^{11132231220221} is an apocalyptic number.

It is an amenable number.

11132231220221 is a deficient number, since it is larger than the sum of its proper divisors (1).

11132231220221 is an equidigital number, since it uses as much as digits as its factorization.

11132231220221 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 576, while the sum is 23.

Adding to 11132231220221 its reverse (12202213223111), we get a palindrome (23334444443332).

The spelling of 11132231220221 in words is "eleven trillion, one hundred thirty-two billion, two hundred thirty-one million, two hundred twenty thousand, two hundred twenty-one".