1112002120181 has 2 divisors, whose sum is σ = 1112002120182. Its totient is φ = 1112002120180.

The previous prime is 1112002120127. The next prime is 1112002120231. The reversal of 1112002120181 is 1810212002111.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 677384965156 + 434617155025 = 823034^2 + 659255^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1112002120181 is a prime.

It is a super-2 number, since 2×1112002120181² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1112002120981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 556001060090 + 556001060091.

It is an arithmetic number, because the mean of its divisors is an integer number (556001060091).

Almost surely, 2^{1112002120181} is an apocalyptic number.

It is an amenable number.

1112002120181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1112002120181 is an equidigital number, since it uses as much as digits as its factorization.

1112002120181 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 64, while the sum is 20.

Adding to 1112002120181 its reverse (1810212002111), we get a palindrome (2922214122292).

The spelling of 1112002120181 in words is "one trillion, one hundred twelve billion, two million, one hundred twenty thousand, one hundred eighty-one".