1213220302 has 12 divisors (see below), whose sum is σ = 2116945800. Its totient is φ = 519951516.

The previous prime is 1213220273. The next prime is 1213220303. The reversal of 1213220302 is 2030223121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1213220303) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6189802 + ... + 6189997.

It is an arithmetic number, because the mean of its divisors is an integer number (176412150).

Almost surely, 2^1213220302 is an apocalyptic number.

1213220302 is a deficient number, since it is larger than the sum of its proper divisors (903725498).

1213220302 is a wasteful number, since it uses less digits than its factorization.

1213220302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12379815 (or 12379808 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 1213220302 is about 34831.3120912779. The cubic root of 1213220302 is about 1066.5467329781.

Adding to 1213220302 its reverse (2030223121), we get a palindrome (3243443423).

The spelling of 1213220302 in words is "one billion, two hundred thirteen million, two hundred twenty thousand, three hundred two".