1220061113 has 16 divisors (see below), whose sum is σ = 1267126416. Its totient is φ = 1174118400.

The previous prime is 1220061107. The next prime is 1220061119. The reversal of 1220061113 is 3111600221.

It is an interprime number because it is at equal distance from previous prime (1220061107) and next prime (1220061119).

It can be written as a sum of positive squares in 8 ways, for example, as 88209664 + 1131851449 = 9392^2 + 33643^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220061113 - 2⁸ = 1220060857 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1220061091 and 1220061100.

It is not an unprimeable number, because it can be changed into a prime (1220061119) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 603881 + ... + 605897.

It is an arithmetic number, because the mean of its divisors is an integer number (79195401).

Almost surely, 2^1220061113 is an apocalyptic number.

It is an amenable number.

1220061113 is a deficient number, since it is larger than the sum of its proper divisors (47065303).

1220061113 is a wasteful number, since it uses less digits than its factorization.

1220061113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2284.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 1220061113 is about 34929.3732122407. The cubic root of 1220061113 is about 1068.5475716699.

Adding to 1220061113 its reverse (3111600221), we get a palindrome (4331661334).

The spelling of 1220061113 in words is "one billion, two hundred twenty million, sixty-one thousand, one hundred thirteen".