80021131 has 2 divisors, whose sum is σ = 80021132. Its totient is φ = 80021130.

The previous prime is 80021129. The next prime is 80021143. The reversal of 80021131 is 13112008.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 80021131 - 2¹ = 80021129 is a prime.

It is a super-2 number, since 2×80021131² = 12806762813038322, which contains 22 as substring.

Together with 80021129, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (80021111) 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, 40010565 + 40010566.

It is an arithmetic number, because the mean of its divisors is an integer number (40010566).

Almost surely, 2^80021131 is an apocalyptic number.

80021131 is a deficient number, since it is larger than the sum of its proper divisors (1).

80021131 is an equidigital number, since it uses as much as digits as its factorization.

80021131 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 80021131 is about 8945.4530908166. The cubic root of 80021131 is about 430.9248724661.

Adding to 80021131 its reverse (13112008), we get a palindrome (93133139).

The spelling of 80021131 in words is "eighty million, twenty-one thousand, one hundred thirty-one".