1220514015 has 16 divisors (see below), whose sum is σ = 2231797248. Its totient is φ = 557949216.

The previous prime is 1220514007. The next prime is 1220514019. The reversal of 1220514015 is 5104150221.

It is not a de Polignac number, because 1220514015 - 2³ = 1220514007 is a prime.

It is a super-2 number, since 2×1220514015² = 2979308921622840450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 1220513982 and 1220514000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220514019) 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, 5811867 + ... + 5812076.

It is an arithmetic number, because the mean of its divisors is an integer number (139487328).

Almost surely, 2^1220514015 is an apocalyptic number.

1220514015 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1220514015 is a deficient number, since it is larger than the sum of its proper divisors (1011283233).

1220514015 is a wasteful number, since it uses less digits than its factorization.

1220514015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11623958.

The product of its (nonzero) digits is 400, while the sum is 21.

The square root of 1220514015 is about 34935.8557215935. The cubic root of 1220514015 is about 1068.6797747367.

Adding to 1220514015 its reverse (5104150221), we get a palindrome (6324664236).

The spelling of 1220514015 in words is "one billion, two hundred twenty million, five hundred fourteen thousand, fifteen".