80692121 has 2 divisors, whose sum is σ = 80692122. Its totient is φ = 80692120.

The previous prime is 80692111. The next prime is 80692127. The reversal of 80692121 is 12129608.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 79566400 + 1125721 = 8920^2 + 1061^2 .

It is a cyclic number.

It is not a de Polignac number, because 80692121 - 2²⁶ = 13583257 is a prime.

It is a super-2 number, since 2×80692121² = 13022436782957282, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (80692127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40346060 + 40346061.

It is an arithmetic number, because the mean of its divisors is an integer number (40346061).

Almost surely, 2^80692121 is an apocalyptic number.

It is an amenable number.

80692121 is a deficient number, since it is larger than the sum of its proper divisors (1).

80692121 is an equidigital number, since it uses as much as digits as its factorization.

80692121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 80692121 is about 8982.8793268083. The cubic root of 80692121 is about 432.1259795621.

The spelling of 80692121 in words is "eighty million, six hundred ninety-two thousand, one hundred twenty-one".