2021010100247 has 2 divisors, whose sum is σ = 2021010100248. Its totient is φ = 2021010100246.

The previous prime is 2021010100171. The next prime is 2021010100271. The reversal of 2021010100247 is 7420010101202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2021010100247 - 2¹⁶ = 2021010034711 is a prime.

It is a super-2 number, since 2×2021010100247² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2021010100147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1010505050123 + 1010505050124.

It is an arithmetic number, because the mean of its divisors is an integer number (1010505050124).

Almost surely, 2^{2021010100247} is an apocalyptic number.

2021010100247 is a deficient number, since it is larger than the sum of its proper divisors (1).

2021010100247 is an equidigital number, since it uses as much as digits as its factorization.

2021010100247 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 224, while the sum is 20.

Adding to 2021010100247 its reverse (7420010101202), we get a palindrome (9441020201449).

The spelling of 2021010100247 in words is "two trillion, twenty-one billion, ten million, one hundred thousand, two hundred forty-seven".