1220105061 has 12 divisors (see below), whose sum is σ = 2014141792. Its totient is φ = 697202856.

The previous prime is 1220105059. The next prime is 1220105087. The reversal of 1220105061 is 1605010221.

It is not a de Polignac number, because 1220105061 - 2¹ = 1220105059 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 (1220105021) 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, 9683311 + ... + 9683436.

Almost surely, 2^1220105061 is an apocalyptic number.

It is an amenable number.

1220105061 is a deficient number, since it is larger than the sum of its proper divisors (794036731).

1220105061 is a wasteful number, since it uses less digits than its factorization.

1220105061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19366760 (or 19366757 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 1220105061 is about 34930.0023046091. The cubic root of 1220105061 is about 1068.5604016187.

Adding to 1220105061 its reverse (1605010221), we get a palindrome (2825115282).

The spelling of 1220105061 in words is "one billion, two hundred twenty million, one hundred five thousand, sixty-one".