1220511627117 has 12 divisors (see below), whose sum is σ = 1763017904700. Its totient is φ = 813648264768.

The previous prime is 1220511627107. The next prime is 1220511627133. The reversal of 1220511627117 is 7117261150221.

It is a happy number.

1220511627117 is a `hidden beast` number, since 1 + 2 + 2 + 0 + 5 + 11 + 627 + 1 + 17 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 760835763081 + 459675864036 = 872259^2 + 677994^2 .

It is not a de Polignac number, because 1220511627117 - 2³² = 1216216659821 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220511627107) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1881742 + ... + 2445807.

It is an arithmetic number, because the mean of its divisors is an integer number (146918158725).

Almost surely, 2^{1220511627117} is an apocalyptic number.

It is an amenable number.

1220511627117 is a deficient number, since it is larger than the sum of its proper divisors (542506277583).

1220511627117 is a wasteful number, since it uses less digits than its factorization.

1220511627117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4358892 (or 4358889 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 36.

Adding to 1220511627117 its reverse (7117261150221), we get a palindrome (8337772777338).

The spelling of 1220511627117 in words is "one trillion, two hundred twenty billion, five hundred eleven million, six hundred twenty-seven thousand, one hundred seventeen".