2021011101047 has 2 divisors, whose sum is σ = 2021011101048. Its totient is φ = 2021011101046.

The previous prime is 2021011101041. The next prime is 2021011101113. The reversal of 2021011101047 is 7401011101202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2021011101047 - 2¹⁴ = 2021011084663 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021011101041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010505550523 + 1010505550524.

It is an arithmetic number, because the mean of its divisors is an integer number (1010505550524).

Almost surely, 2^{2021011101047} is an apocalyptic number.

2021011101047 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021011101047 is an equidigital number, since it uses as much as digits as its factorization.

2021011101047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112, while the sum is 20.

Adding to 2021011101047 its reverse (7401011101202), we get a palindrome (9422022202249).

The spelling of 2021011101047 in words is "two trillion, twenty-one billion, eleven million, one hundred one thousand, forty-seven".