2221201331 has 2 divisors, whose sum is σ = 2221201332. Its totient is φ = 2221201330.

The previous prime is 2221201319. The next prime is 2221201343. The reversal of 2221201331 is 1331021222.

2221201331 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (2221201319) and next prime (2221201343).

It is a cyclic number.

It is not a de Polignac number, because 2221201331 - 2¹⁴ = 2221184947 is a prime.

It is a super-2 number, since 2×2221201331² = 9867470705672343122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2221201361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1110600665 + 1110600666.

It is an arithmetic number, because the mean of its divisors is an integer number (1110600666).

Almost surely, 2^2221201331 is an apocalyptic number.

2221201331 is a deficient number, since it is larger than the sum of its proper divisors (1).

2221201331 is an equidigital number, since it uses as much as digits as its factorization.

2221201331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2221201331 is about 47129.6226486060. The cubic root of 2221201331 is about 1304.7560170801.

Adding to 2221201331 its reverse (1331021222), we get a palindrome (3552222553).

The spelling of 2221201331 in words is "two billion, two hundred twenty-one million, two hundred one thousand, three hundred thirty-one".