221134411 has 2 divisors, whose sum is σ = 221134412. Its totient is φ = 221134410.

The previous prime is 221134387. The next prime is 221134421. The reversal of 221134411 is 114431122.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 221134411 - 2¹¹ = 221132363 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (221134421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 110567205 + 110567206.

It is an arithmetic number, because the mean of its divisors is an integer number (110567206).

Almost surely, 2^221134411 is an apocalyptic number.

221134411 is a deficient number, since it is larger than the sum of its proper divisors (1).

221134411 is an equidigital number, since it uses as much as digits as its factorization.

221134411 is an evil number, because the sum of its binary digits is even.

The product of its digits is 192, while the sum is 19.

The square root of 221134411 is about 14870.5887913021. The cubic root of 221134411 is about 604.7169050963.

Adding to 221134411 its reverse (114431122), we get a palindrome (335565533).

The spelling of 221134411 in words is "two hundred twenty-one million, one hundred thirty-four thousand, four hundred eleven".