2172035081 has 2 divisors, whose sum is σ = 2172035082. Its totient is φ = 2172035080.

The previous prime is 2172035059. The next prime is 2172035101. The reversal of 2172035081 is 1805302712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2016010000 + 156025081 = 44900^2 + 12491^2 .

It is a cyclic number.

It is not a de Polignac number, because 2172035081 - 2¹⁴ = 2172018697 is a prime.

It is a super-2 number, since 2×2172035081² = 9435472786189353122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2172005081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086017540 + 1086017541.

It is an arithmetic number, because the mean of its divisors is an integer number (1086017541).

Almost surely, 2^2172035081 is an apocalyptic number.

It is an amenable number.

2172035081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172035081 is an equidigital number, since it uses as much as digits as its factorization.

2172035081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 2172035081 is about 46605.0971568561. The cubic root of 2172035081 is about 1295.0571832652.

Adding to 2172035081 its reverse (1805302712), we get a palindrome (3977337793).

The spelling of 2172035081 in words is "two billion, one hundred seventy-two million, thirty-five thousand, eighty-one".