1226011541 has 2 divisors, whose sum is σ = 1226011542. Its totient is φ = 1226011540.

The previous prime is 1226011531. The next prime is 1226011597. The reversal of 1226011541 is 1451106221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 820593316 + 405418225 = 28646^2 + 20135^2 .

It is an emirp because it is prime and its reverse (1451106221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1226011541 - 2¹⁰ = 1226010517 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226011531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613005770 + 613005771.

It is an arithmetic number, because the mean of its divisors is an integer number (613005771).

Almost surely, 2^1226011541 is an apocalyptic number.

It is an amenable number.

1226011541 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226011541 is an equidigital number, since it uses as much as digits as its factorization.

1226011541 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 1226011541 is about 35014.4476038106. The cubic root of 1226011541 is about 1070.2819127910.

Adding to 1226011541 its reverse (1451106221), we get a palindrome (2677117762).

The spelling of 1226011541 in words is "one billion, two hundred twenty-six million, eleven thousand, five hundred forty-one".