1220112431101 has 2 divisors, whose sum is σ = 1220112431102. Its totient is φ = 1220112431100.

The previous prime is 1220112431093. The next prime is 1220112431141. The reversal of 1220112431101 is 1011342110221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 638704656100 + 581407775001 = 799190^2 + 762501^2 .

It is an emirp because it is prime and its reverse (1011342110221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1220112431101 - 2³ = 1220112431093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1220112431141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610056215550 + 610056215551.

It is an arithmetic number, because the mean of its divisors is an integer number (610056215551).

Almost surely, 2^{1220112431101} is an apocalyptic number.

It is an amenable number.

1220112431101 is a deficient number, since it is larger than the sum of its proper divisors (1).

1220112431101 is an equidigital number, since it uses as much as digits as its factorization.

1220112431101 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1220112431101 its reverse (1011342110221), we get a palindrome (2231454541322).

The spelling of 1220112431101 in words is "one trillion, two hundred twenty billion, one hundred twelve million, four hundred thirty-one thousand, one hundred one".