2100020001089 has 2 divisors, whose sum is σ = 2100020001090. Its totient is φ = 2100020001088.

The previous prime is 2100020001067. The next prime is 2100020001161. The reversal of 2100020001089 is 9801000200012.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2091977498689 + 8042502400 = 1446367^2 + 89680^2 .

It is a cyclic number.

It is not a de Polignac number, because 2100020001089 - 2⁸ = 2100020000833 is a prime.

It is a super-2 number, since 2×2100020001089² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2100020001059) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1050010000544 + 1050010000545.

It is an arithmetic number, because the mean of its divisors is an integer number (1050010000545).

Almost surely, 2^{2100020001089} is an apocalyptic number.

It is an amenable number.

2100020001089 is a deficient number, since it is larger than the sum of its proper divisors (1).

2100020001089 is an equidigital number, since it uses as much as digits as its factorization.

2100020001089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 23.

The spelling of 2100020001089 in words is "two trillion, one hundred billion, twenty million, one thousand, eighty-nine".