1120012021181 has 2 divisors, whose sum is σ = 1120012021182. Its totient is φ = 1120012021180.

The previous prime is 1120012021153. The next prime is 1120012021243. The reversal of 1120012021181 is 1811202100211.

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., 821796640900 + 298215380281 = 906530^2 + 546091^2 .

It is a cyclic number.

It is not a de Polignac number, because 1120012021181 - 2²² = 1120007826877 is a prime.

It is a super-2 number, since 2×1120012021181² (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 (1120012021081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560006010590 + 560006010591.

It is an arithmetic number, because the mean of its divisors is an integer number (560006010591).

Almost surely, 2^{1120012021181} is an apocalyptic number.

It is an amenable number.

1120012021181 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120012021181 is an equidigital number, since it uses as much as digits as its factorization.

1120012021181 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 1120012021181 its reverse (1811202100211), we get a palindrome (2931214121392).

The spelling of 1120012021181 in words is "one trillion, one hundred twenty billion, twelve million, twenty-one thousand, one hundred eighty-one".