1220412015 has 40 divisors (see below), whose sum is σ = 2191219008. Its totient is φ = 649840320.

The previous prime is 1220412013. The next prime is 1220412023. The reversal of 1220412015 is 5102140221.

It is not a de Polignac number, because 1220412015 - 2¹ = 1220412013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220412013) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 294810 + ... + 298920.

Almost surely, 2^1220412015 is an apocalyptic number.

1220412015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1220412015 is a deficient number, since it is larger than the sum of its proper divisors (970806993).

1220412015 is an equidigital number, since it uses as much as digits as its factorization.

1220412015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4861 (or 4852 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1220412015 is about 34934.3958728357. The cubic root of 1220412015 is about 1068.6500035713.

Adding to 1220412015 its reverse (5102140221), we get a palindrome (6322552236).

The spelling of 1220412015 in words is "one billion, two hundred twenty million, four hundred twelve thousand, fifteen".