1220112221113 has 2 divisors, whose sum is σ = 1220112221114. Its totient is φ = 1220112221112.

The previous prime is 1220112221087. The next prime is 1220112221161. The reversal of 1220112221113 is 3111222110221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 924776492409 + 295335728704 = 961653^2 + 543448^2 .

It is an emirp because it is prime and its reverse (3111222110221) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220112221113 is a prime.

It is not a weakly prime, because it can be changed into another prime (1220112221173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610056110556 + 610056110557.

It is an arithmetic number, because the mean of its divisors is an integer number (610056110557).

Almost surely, 2^{1220112221113} is an apocalyptic number.

It is an amenable number.

1220112221113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220112221113 is an equidigital number, since it uses as much as digits as its factorization.

1220112221113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96, while the sum is 19.

Adding to 1220112221113 its reverse (3111222110221), we get a palindrome (4331334331334).

The spelling of 1220112221113 in words is "one trillion, two hundred twenty billion, one hundred twelve million, two hundred twenty-one thousand, one hundred thirteen".