1220302213 has 8 divisors (see below), whose sum is σ = 1319673600. Its totient is φ = 1121716848.

The previous prime is 1220302207. The next prime is 1220302231. The reversal of 1220302213 is 3122030221.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220302213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220302243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193273 + ... + 199486.

It is an arithmetic number, because the mean of its divisors is an integer number (164959200).

Almost surely, 2^1220302213 is an apocalyptic number.

1220302213 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1220302213 is a deficient number, since it is larger than the sum of its proper divisors (99371387).

1220302213 is a wasteful number, since it uses less digits than its factorization.

1220302213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393011.

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

The square root of 1220302213 is about 34932.8242917746. The cubic root of 1220302213 is about 1068.6179533496.

Adding to 1220302213 its reverse (3122030221), we get a palindrome (4342332434).

It can be divided in two parts, 122030221 and 3, that multiplied together give a palindrome (366090663).

The spelling of 1220302213 in words is "one billion, two hundred twenty million, three hundred two thousand, two hundred thirteen".