1122112002181 has 2 divisors, whose sum is σ = 1122112002182. Its totient is φ = 1122112002180.

The previous prime is 1122112002173. The next prime is 1122112002203. The reversal of 1122112002181 is 1812002112211.

It is a happy number.

It is an a-pointer prime, because the next prime (1122112002203) can be obtained adding 1122112002181 to its sum of digits (22).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 842281582081 + 279830420100 = 917759^2 + 528990^2 .

It is an emirp because it is prime and its reverse (1812002112211) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1122112002181 - 2³ = 1122112002173 is a prime.

It is a super-2 number, since 2×1122112002181² (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 (1122112002101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 561056001090 + 561056001091.

It is an arithmetic number, because the mean of its divisors is an integer number (561056001091).

Almost surely, 2^{1122112002181} is an apocalyptic number.

It is an amenable number.

1122112002181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1122112002181 is an equidigital number, since it uses as much as digits as its factorization.

1122112002181 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 128, while the sum is 22.

Adding to 1122112002181 its reverse (1812002112211), we get a palindrome (2934114114392).

The spelling of 1122112002181 in words is "one trillion, one hundred twenty-two billion, one hundred twelve million, two thousand, one hundred eighty-one".