1220436013 has 2 divisors, whose sum is σ = 1220436014. Its totient is φ = 1220436012.

The previous prime is 1220435999. The next prime is 1220436031. The reversal of 1220436013 is 3106340221.

Together with next prime (1220436031) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1182465769 + 37970244 = 34387^2 + 6162^2 .

It is an emirp because it is prime and its reverse (3106340221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1220436013 - 2²⁹ = 683565101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220436043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610218006 + 610218007.

It is an arithmetic number, because the mean of its divisors is an integer number (610218007).

Almost surely, 2^1220436013 is an apocalyptic number.

It is an amenable number.

1220436013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220436013 is an equidigital number, since it uses as much as digits as its factorization.

1220436013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 1220436013 is about 34934.7393435245. The cubic root of 1220436013 is about 1068.6570081169.

Adding to 1220436013 its reverse (3106340221), we get a palindrome (4326776234).

The spelling of 1220436013 in words is "one billion, two hundred twenty million, four hundred thirty-six thousand, thirteen".