20467121 has 2 divisors, whose sum is σ = 20467122. Its totient is φ = 20467120.

The previous prime is 20467103. The next prime is 20467129. The reversal of 20467121 is 12176402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11316496 + 9150625 = 3364^2 + 3025^2 .

It is a cyclic number.

It is not a de Polignac number, because 20467121 - 2¹⁴ = 20450737 is a prime.

It is equal to p_1298300 and since 20467121 and 1298300 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (20467129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10233560 + 10233561.

It is an arithmetic number, because the mean of its divisors is an integer number (10233561).

Almost surely, 2^20467121 is an apocalyptic number.

It is an amenable number.

20467121 is a deficient number, since it is larger than the sum of its proper divisors (1).

20467121 is an equidigital number, since it uses as much as digits as its factorization.

20467121 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 20467121 is about 4524.0602339049. The cubic root of 20467121 is about 273.5387884521.

The spelling of 20467121 in words is "twenty million, four hundred sixty-seven thousand, one hundred twenty-one".