541221013 has 2 divisors, whose sum is σ = 541221014. Its totient is φ = 541221012.

The previous prime is 541221011. The next prime is 541221029. The reversal of 541221013 is 310122145.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 375506884 + 165714129 = 19378^2 + 12873^2 .

It is a cyclic number.

It is not a de Polignac number, because 541221013 - 2¹ = 541221011 is a prime.

Together with 541221011, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (541221011) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 270610506 + 270610507.

It is an arithmetic number, because the mean of its divisors is an integer number (270610507).

Almost surely, 2^541221013 is an apocalyptic number.

It is an amenable number.

541221013 is a deficient number, since it is larger than the sum of its proper divisors (1).

541221013 is an equidigital number, since it uses as much as digits as its factorization.

541221013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 541221013 is about 23264.1572596129. The cubic root of 541221013 is about 814.9385894737.

Adding to 541221013 its reverse (310122145), we get a palindrome (851343158).

The spelling of 541221013 in words is "five hundred forty-one million, two hundred twenty-one thousand, thirteen".