1220935597 has 32 divisors (see below), whose sum is σ = 1544659200. Its totient is φ = 960744960.

The previous prime is 1220935567. The next prime is 1220935601. The reversal of 1220935597 is 7955390221.

It is not a de Polignac number, because 1220935597 - 2¹⁵ = 1220902829 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220935517) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 236518 + ... + 241624.

It is an arithmetic number, because the mean of its divisors is an integer number (48270600).

Almost surely, 2^1220935597 is an apocalyptic number.

1220935597 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

1220935597 is a deficient number, since it is larger than the sum of its proper divisors (323723603).

1220935597 is an equidigital number, since it uses as much as digits as its factorization.

1220935597 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5186 (or 5172 counting only the distinct ones).

The product of its (nonzero) digits is 170100, while the sum is 43.

The square root of 1220935597 is about 34941.8888585033. Note that the first 4 decimals coincide. The cubic root of 1220935597 is about 1068.8028060408.

The spelling of 1220935597 in words is "one billion, two hundred twenty million, nine hundred thirty-five thousand, five hundred ninety-seven".