1220610015 has 24 divisors (see below), whose sum is σ = 2128716720. Its totient is φ = 646994304.

The previous prime is 1220609993. The next prime is 1220610019. The reversal of 1220610015 is 5100160221.

It is not a de Polignac number, because 1220610015 - 2¹⁴ = 1220593631 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1220610015.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220610019) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75870 + ... + 90539.

It is an arithmetic number, because the mean of its divisors is an integer number (88696530).

Almost surely, 2^1220610015 is an apocalyptic number.

1220610015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1220610015 is a deficient number, since it is larger than the sum of its proper divisors (908106705).

1220610015 is a wasteful number, since it uses less digits than its factorization.

1220610015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 166583 (or 166580 counting only the distinct ones).

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

The square root of 1220610015 is about 34937.2296411722. The cubic root of 1220610015 is about 1068.7077931419.

Adding to 1220610015 its reverse (5100160221), we get a palindrome (6320770236).

The spelling of 1220610015 in words is "one billion, two hundred twenty million, six hundred ten thousand, fifteen".