2126339081 has 2 divisors, whose sum is σ = 2126339082. Its totient is φ = 2126339080.

The previous prime is 2126339071. The next prime is 2126339099. The reversal of 2126339081 is 1809336212.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1606727056 + 519612025 = 40084^2 + 22795^2 .

It is a cyclic number.

It is not a de Polignac number, because 2126339081 - 2³⁰ = 1052597257 is a prime.

It is a super-2 number, since 2×2126339081² = 9042635774775849122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2126339071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1063169540 + 1063169541.

It is an arithmetic number, because the mean of its divisors is an integer number (1063169541).

Almost surely, 2^2126339081 is an apocalyptic number.

It is an amenable number.

2126339081 is a deficient number, since it is larger than the sum of its proper divisors (1).

2126339081 is an equidigital number, since it uses as much as digits as its factorization.

2126339081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 35.

The square root of 2126339081 is about 46112.2443717501. The cubic root of 2126339081 is about 1285.9107899437.

The spelling of 2126339081 in words is "two billion, one hundred twenty-six million, three hundred thirty-nine thousand, eighty-one".