1220541241 has 4 divisors (see below), whose sum is σ = 1262628900. Its totient is φ = 1178453584.

The previous prime is 1220541193. The next prime is 1220541281. The reversal of 1220541241 is 1421450221.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 206755641 + 1013785600 = 14379^2 + 31840^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220541241 - 2¹³ = 1220533049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220541281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21043786 + ... + 21043843.

It is an arithmetic number, because the mean of its divisors is an integer number (315657225).

Almost surely, 2^1220541241 is an apocalyptic number.

It is an amenable number.

1220541241 is a deficient number, since it is larger than the sum of its proper divisors (42087659).

1220541241 is an equidigital number, since it uses as much as digits as its factorization.

1220541241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42087658.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1220541241 is about 34936.2453763996. The cubic root of 1220541241 is about 1068.6877210224.

Adding to 1220541241 its reverse (1421450221), we get a palindrome (2641991462).

The spelling of 1220541241 in words is "one billion, two hundred twenty million, five hundred forty-one thousand, two hundred forty-one".