541221011 has 2 divisors, whose sum is σ = 541221012. Its totient is φ = 541221010.

The previous prime is 541221007. The next prime is 541221013. The reversal of 541221011 is 110122145.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 541221011 - 2² = 541221007 is a prime.

Together with 541221013, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (541221013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270610505 + 270610506.

It is an arithmetic number, because the mean of its divisors is an integer number (270610506).

Almost surely, 2^541221011 is an apocalyptic number.

541221011 is a deficient number, since it is larger than the sum of its proper divisors (1).

541221011 is an equidigital number, since it uses as much as digits as its factorization.

541221011 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 541221011 is about 23264.1572166283. The cubic root of 541221011 is about 814.9385884699.

Adding to 541221011 its reverse (110122145), we get a palindrome (651343156).

The spelling of 541221011 in words is "five hundred forty-one million, two hundred twenty-one thousand, eleven".