1220111102113 has 2 divisors, whose sum is σ = 1220111102114. Its totient is φ = 1220111102112.

The previous prime is 1220111102069. The next prime is 1220111102201. The reversal of 1220111102113 is 3112011110221.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 936892356624 + 283218745489 = 967932^2 + 532183^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1220111102113 is a prime.

It is a super-2 number, since 2×1220111102113² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1220111102513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610055551056 + 610055551057.

It is an arithmetic number, because the mean of its divisors is an integer number (610055551057).

Almost surely, 2^{1220111102113} is an apocalyptic number.

It is an amenable number.

1220111102113 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220111102113 is an equidigital number, since it uses as much as digits as its factorization.

1220111102113 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1220111102113 its reverse (3112011110221), we get a palindrome (4332122212334).

The spelling of 1220111102113 in words is "one trillion, two hundred twenty billion, one hundred eleven million, one hundred two thousand, one hundred thirteen".