1220302211 has 12 divisors (see below), whose sum is σ = 1297585848. Its totient is φ = 1147387392.

The previous prime is 1220302207. The next prime is 1220302231. The reversal of 1220302211 is 1122030221.

It is a happy number.

It is not a de Polignac number, because 1220302211 - 2² = 1220302207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1220302201) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 503675 + ... + 506091.

It is an arithmetic number, because the mean of its divisors is an integer number (108132154).

Almost surely, 2^1220302211 is an apocalyptic number.

1220302211 is a deficient number, since it is larger than the sum of its proper divisors (77283637).

1220302211 is a wasteful number, since it uses less digits than its factorization.

1220302211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4198 (or 4181 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 1220302211 is about 34932.8242631483. The cubic root of 1220302211 is about 1068.6179527658.

Adding to 1220302211 its reverse (1122030221), we get a palindrome (2342332432).

The spelling of 1220302211 in words is "one billion, two hundred twenty million, three hundred two thousand, two hundred eleven".