122009519 has 2 divisors, whose sum is σ = 122009520. Its totient is φ = 122009518.

The previous prime is 122009513. The next prime is 122009543. The reversal of 122009519 is 915900221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 122009519 - 2⁸ = 122009263 is a prime.

It is a super-2 number, since 2×122009519² = 29772645453222722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 122009491 and 122009500.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (122009513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61004759 + 61004760.

It is an arithmetic number, because the mean of its divisors is an integer number (61004760).

Almost surely, 2^122009519 is an apocalyptic number.

122009519 is a deficient number, since it is larger than the sum of its proper divisors (1).

122009519 is an equidigital number, since it uses as much as digits as its factorization.

122009519 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1620, while the sum is 29.

The square root of 122009519 is about 11045.7919136656. The cubic root of 122009519 is about 495.9804652708.

The spelling of 122009519 in words is "one hundred twenty-two million, nine thousand, five hundred nineteen".