2106444281 has 2 divisors, whose sum is σ = 2106444282. Its totient is φ = 2106444280.

The previous prime is 2106444271. The next prime is 2106444287. The reversal of 2106444281 is 1824446012.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1726818025 + 379626256 = 41555^2 + 19484^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2106444281 is a prime.

It is a super-3 number, since 3×2106444281³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (2106444287) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1053222140 + 1053222141.

It is an arithmetic number, because the mean of its divisors is an integer number (1053222141).

Almost surely, 2^2106444281 is an apocalyptic number.

It is an amenable number.

2106444281 is a deficient number, since it is larger than the sum of its proper divisors (1).

2106444281 is an equidigital number, since it uses as much as digits as its factorization.

2106444281 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 2106444281 is about 45896.0159599937. The cubic root of 2106444281 is about 1281.8877340251.

The spelling of 2106444281 in words is "two billion, one hundred six million, four hundred forty-four thousand, two hundred eighty-one".