1220302197 has 24 divisors (see below), whose sum is σ = 1836257280. Its totient is φ = 780049440.

The previous prime is 1220302183. The next prime is 1220302199. The reversal of 1220302197 is 7912030221.

It is not a de Polignac number, because 1220302197 - 2⁸ = 1220301941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1220302197.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220302199) 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, 10348 + ... + 50474.

It is an arithmetic number, because the mean of its divisors is an integer number (76510720).

Almost surely, 2^1220302197 is an apocalyptic number.

It is an amenable number.

1220302197 is a deficient number, since it is larger than the sum of its proper divisors (615955083).

1220302197 is a wasteful number, since it uses less digits than its factorization.

1220302197 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40273 (or 40270 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 1220302197 is about 34932.8240627637. The cubic root of 1220302197 is about 1068.6179486792.

The spelling of 1220302197 in words is "one billion, two hundred twenty million, three hundred two thousand, one hundred ninety-seven".