20033001213209 has 4 divisors (see below), whose sum is σ = 20033010362916. Its totient is φ = 20032992063504.

The previous prime is 20033001213193. The next prime is 20033001213229. The reversal of 20033001213209 is 90231210033002.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 12013655109184 + 8019346104025 = 3466072^2 + 2831845^2 .

It is a cyclic number.

It is not a de Polignac number, because 20033001213209 - 2⁴ = 20033001213193 is a prime.

It is a super-2 number, since 2×20033001213209² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20033001213229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 867347 + ... + 6388919.

It is an arithmetic number, because the mean of its divisors is an integer number (5008252590729).

Almost surely, 2^{20033001213209} is an apocalyptic number.

It is an amenable number.

20033001213209 is a deficient number, since it is larger than the sum of its proper divisors (9149707).

20033001213209 is an equidigital number, since it uses as much as digits as its factorization.

20033001213209 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9149706.

The product of its (nonzero) digits is 1944, while the sum is 26.

The spelling of 20033001213209 in words is "twenty trillion, thirty-three billion, one million, two hundred thirteen thousand, two hundred nine".