1220310202 has 4 divisors (see below), whose sum is σ = 1830465306. Its totient is φ = 610155100.

The previous prime is 1220310193. The next prime is 1220310229. The reversal of 1220310202 is 2020130221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2020130221 = 31 ⋅65165491.

It can be written as a sum of positive squares in only one way, i.e., 839318841 + 380991361 = 28971^2 + 19519^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305077549 + ... + 305077552.

Almost surely, 2^1220310202 is an apocalyptic number.

1220310202 is a deficient number, since it is larger than the sum of its proper divisors (610155104).

1220310202 is an equidigital number, since it uses as much as digits as its factorization.

1220310202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610155103.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1220310202 is about 34932.9386396278. The cubic root of 1220310202 is about 1068.6202853321.

Adding to 1220310202 its reverse (2020130221), we get a palindrome (3240440423).

The spelling of 1220310202 in words is "one billion, two hundred twenty million, three hundred ten thousand, two hundred two".