1111020021941 has 2 divisors, whose sum is σ = 1111020021942. Its totient is φ = 1111020021940.

The previous prime is 1111020021913. The next prime is 1111020021953. The reversal of 1111020021941 is 1491200201111.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 663974003716 + 447046018225 = 814846^2 + 668615^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1111020021941 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1111020021901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 555510010970 + 555510010971.

It is an arithmetic number, because the mean of its divisors is an integer number (555510010971).

Almost surely, 2^{1111020021941} is an apocalyptic number.

It is an amenable number.

1111020021941 is a deficient number, since it is larger than the sum of its proper divisors (1).

1111020021941 is an equidigital number, since it uses as much as digits as its factorization.

1111020021941 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 23.

The spelling of 1111020021941 in words is "one trillion, one hundred eleven billion, twenty million, twenty-one thousand, nine hundred forty-one".