2021111101003 has 2 divisors, whose sum is σ = 2021111101004. Its totient is φ = 2021111101002.

The previous prime is 2021111100991. The next prime is 2021111101007. The reversal of 2021111101003 is 3001011111202.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2021111101003 is a prime.

It is not a weakly prime, because it can be changed into another prime (2021111101007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010555550501 + 1010555550502.

It is an arithmetic number, because the mean of its divisors is an integer number (1010555550502).

Almost surely, 2^{2021111101003} is an apocalyptic number.

2021111101003 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021111101003 is an equidigital number, since it uses as much as digits as its factorization.

2021111101003 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12, while the sum is 13.

Adding to 2021111101003 its reverse (3001011111202), we get a palindrome (5022122212205).

The spelling of 2021111101003 in words is "two trillion, twenty-one billion, one hundred eleven million, one hundred one thousand, three".