20213233313209 has 2 divisors, whose sum is σ = 20213233313210. Its totient is φ = 20213233313208.

The previous prime is 20213233313201. The next prime is 20213233313341. The reversal of 20213233313209 is 90231333231202.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20172853616400 + 40379696809 = 4491420^2 + 200947^2 .

It is a cyclic number.

It is not a de Polignac number, because 20213233313209 - 2³ = 20213233313201 is a prime.

It is a super-3 number, since 3×20213233313209³ (a number of 41 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (20213233313201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10106616656604 + 10106616656605.

It is an arithmetic number, because the mean of its divisors is an integer number (10106616656605).

Almost surely, 2^{20213233313209} is an apocalyptic number.

It is an amenable number.

20213233313209 is a deficient number, since it is larger than the sum of its proper divisors (1).

20213233313209 is an equidigital number, since it uses as much as digits as its factorization.

20213233313209 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 34.

The spelling of 20213233313209 in words is "twenty trillion, two hundred thirteen billion, two hundred thirty-three million, three hundred thirteen thousand, two hundred nine".