1223020202 has 4 divisors (see below), whose sum is σ = 1834530306. Its totient is φ = 611510100.

The previous prime is 1223020199. The next prime is 1223020217. The reversal of 1223020202 is 2020203221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2020203221 = 13903 ⋅145307.

It can be written as a sum of positive squares in only one way, i.e., 1137105841 + 85914361 = 33721^2 + 9269^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305755049 + ... + 305755052.

Almost surely, 2^1223020202 is an apocalyptic number.

1223020202 is a deficient number, since it is larger than the sum of its proper divisors (611510104).

1223020202 is an equidigital number, since it uses as much as digits as its factorization.

1223020202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611510103.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1223020202 is about 34971.7057347794. The cubic root of 1223020202 is about 1069.4107455165.

Adding to 1223020202 its reverse (2020203221), we get a palindrome (3243223423).

The spelling of 1223020202 in words is "one billion, two hundred twenty-three million, twenty thousand, two hundred two".