1220512541 has 8 divisors (see below), whose sum is σ = 1232416704. Its totient is φ = 1208662560.

The previous prime is 1220512529. The next prime is 1220512543. The reversal of 1220512541 is 1452150221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1220512541 - 2¹⁰ = 1220511517 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220512543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32480 + ... + 59126.

It is an arithmetic number, because the mean of its divisors is an integer number (154052088).

Almost surely, 2^1220512541 is an apocalyptic number.

It is an amenable number.

1220512541 is a deficient number, since it is larger than the sum of its proper divisors (11904163).

1220512541 is a wasteful number, since it uses less digits than its factorization.

1220512541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27091.

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1220512541 is about 34935.8346257822. The cubic root of 1220512541 is about 1068.6793445259.

Adding to 1220512541 its reverse (1452150221), we get a palindrome (2672662762).

The spelling of 1220512541 in words is "one billion, two hundred twenty million, five hundred twelve thousand, five hundred forty-one".