20119261 has 2 divisors, whose sum is σ = 20119262. Its totient is φ = 20119260.

The previous prime is 20119219. The next prime is 20119289. The reversal of 20119261 is 16291102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20025625 + 93636 = 4475^2 + 306^2 .

It is a cyclic number.

It is not a de Polignac number, because 20119261 - 2⁷ = 20119133 is a prime.

It is a super-2 number, since 2×20119261² = 809569326372242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20119201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10059630 + 10059631.

It is an arithmetic number, because the mean of its divisors is an integer number (10059631).

Almost surely, 2^20119261 is an apocalyptic number.

It is an amenable number.

20119261 is a deficient number, since it is larger than the sum of its proper divisors (1).

20119261 is an equidigital number, since it uses as much as digits as its factorization.

20119261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 22.

The square root of 20119261 is about 4485.4499216912. The cubic root of 20119261 is about 271.9802330286.

The spelling of 20119261 in words is "twenty million, one hundred nineteen thousand, two hundred sixty-one".