1120111100021 has 2 divisors, whose sum is σ = 1120111100022. Its totient is φ = 1120111100020.

The previous prime is 1120111099979. The next prime is 1120111100033. The reversal of 1120111100021 is 1200011110211.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1116908671921 + 3202428100 = 1056839^2 + 56590^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1120111100021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1120111099975 and 1120111100011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1120111100071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 560055550010 + 560055550011.

It is an arithmetic number, because the mean of its divisors is an integer number (560055550011).

Almost surely, 2^{1120111100021} is an apocalyptic number.

It is an amenable number.

1120111100021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1120111100021 is an equidigital number, since it uses as much as digits as its factorization.

1120111100021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4, while the sum is 11.

Adding to 1120111100021 its reverse (1200011110211), we get a palindrome (2320122210232).

The spelling of 1120111100021 in words is "one trillion, one hundred twenty billion, one hundred eleven million, one hundred thousand, twenty-one".