1100220020021 has 2 divisors, whose sum is σ = 1100220020022. Its totient is φ = 1100220020020.

The previous prime is 1100220019993. The next prime is 1100220020027. The reversal of 1100220020021 is 1200200220011.

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., 1054759810225 + 45460209796 = 1027015^2 + 213214^2 .

It is a cyclic number.

It is not a de Polignac number, because 1100220020021 - 2¹⁴ = 1100220003637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1100220019984 and 1100220020011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1100220020027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 550110010010 + 550110010011.

It is an arithmetic number, because the mean of its divisors is an integer number (550110010011).

Almost surely, 2^{1100220020021} is an apocalyptic number.

It is an amenable number.

1100220020021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1100220020021 is an equidigital number, since it uses as much as digits as its factorization.

1100220020021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 1100220020021 its reverse (1200200220011), we get a palindrome (2300420240032).

The spelling of 1100220020021 in words is "one trillion, one hundred billion, two hundred twenty million, twenty thousand, twenty-one".