20820119 has 2 divisors, whose sum is σ = 20820120. Its totient is φ = 20820118.

The previous prime is 20820113. The next prime is 20820131. The reversal of 20820119 is 91102802.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20820119 - 2¹⁶ = 20754583 is a prime.

It is a super-2 number, since 2×20820119² = 866954710348322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20820094 and 20820103.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20820113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10410059 + 10410060.

It is an arithmetic number, because the mean of its divisors is an integer number (10410060).

Almost surely, 2^20820119 is an apocalyptic number.

20820119 is a deficient number, since it is larger than the sum of its proper divisors (1).

20820119 is an equidigital number, since it uses as much as digits as its factorization.

20820119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 20820119 is about 4562.9068585716. The cubic root of 20820119 is about 275.1024147468.

The spelling of 20820119 in words is "twenty million, eight hundred twenty thousand, one hundred nineteen".