1220212013 has 2 divisors, whose sum is σ = 1220212014. Its totient is φ = 1220212012.

The previous prime is 1220211991. The next prime is 1220212027. The reversal of 1220212013 is 3102120221.

It is a happy number.

It is an a-pointer prime, because the next prime (1220212027) can be obtained adding 1220212013 to its sum of digits (14).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1024128004 + 196084009 = 32002^2 + 14003^2 .

It is a cyclic number.

It is not a de Polignac number, because 1220212013 - 2⁸ = 1220211757 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220212093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610106006 + 610106007.

It is an arithmetic number, because the mean of its divisors is an integer number (610106007).

Almost surely, 2^1220212013 is an apocalyptic number.

It is an amenable number.

1220212013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220212013 is an equidigital number, since it uses as much as digits as its factorization.

1220212013 is an odious number, because the sum of its binary digits is odd.

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

The square root of 1220212013 is about 34931.5332185692. The cubic root of 1220212013 is about 1068.5916233380.

Adding to 1220212013 its reverse (3102120221), we get a palindrome (4322332234).

The spelling of 1220212013 in words is "one billion, two hundred twenty million, two hundred twelve thousand, thirteen".