2152202081 has 2 divisors, whose sum is σ = 2152202082. Its totient is φ = 2152202080.

The previous prime is 2152202033. The next prime is 2152202083. The reversal of 2152202081 is 1802022512.

2152202081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2147859025 + 4343056 = 46345^2 + 2084^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2152202081 is a prime.

It is a super-2 number, since 2×2152202081² = 9263947594921461122, which contains 22 as substring.

Together with 2152202083, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2152202083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1076101040 + 1076101041.

It is an arithmetic number, because the mean of its divisors is an integer number (1076101041).

Almost surely, 2^2152202081 is an apocalyptic number.

It is an amenable number.

2152202081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2152202081 is an equidigital number, since it uses as much as digits as its factorization.

2152202081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 2152202081 is about 46391.8320504806. The cubic root of 2152202081 is about 1291.1033728334.

Adding to 2152202081 its reverse (1802022512), we get a palindrome (3954224593).

The spelling of 2152202081 in words is "two billion, one hundred fifty-two million, two hundred two thousand, eighty-one".