20010100289 has 2 divisors, whose sum is σ = 20010100290. Its totient is φ = 20010100288.

The previous prime is 20010100283. The next prime is 20010100301. The reversal of 20010100289 is 98200101002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16430112400 + 3579987889 = 128180^2 + 59833^2 .

It is a cyclic number.

It is not a de Polignac number, because 20010100289 - 2²⁴ = 19993323073 is a prime.

It is a super-2 number, since 2×20010100289² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20010100283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005050144 + 10005050145.

It is an arithmetic number, because the mean of its divisors is an integer number (10005050145).

Almost surely, 2^20010100289 is an apocalyptic number.

It is an amenable number.

20010100289 is a deficient number, since it is larger than the sum of its proper divisors (1).

20010100289 is an equidigital number, since it uses as much as digits as its factorization.

20010100289 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 20010100289 in words is "twenty billion, ten million, one hundred thousand, two hundred eighty-nine".