20002012121213 has 4 divisors (see below), whose sum is σ = 20089357152540. Its totient is φ = 19914667089888.

The previous prime is 20002012121191. The next prime is 20002012121293. The reversal of 20002012121213 is 31212121020002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8206173788164 + 11795838333049 = 2864642^2 + 3434507^2 .

It is a cyclic number.

It is not a de Polignac number, because 20002012121213 - 2⁶ = 20002012121149 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20002012121191 and 20002012121200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20002012121293) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43672515320 + ... + 43672515777.

It is an arithmetic number, because the mean of its divisors is an integer number (5022339288135).

Almost surely, 2^{20002012121213} is an apocalyptic number.

It is an amenable number.

20002012121213 is a deficient number, since it is larger than the sum of its proper divisors (87345031327).

20002012121213 is an equidigital number, since it uses as much as digits as its factorization.

20002012121213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87345031326.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 20002012121213 its reverse (31212121020002), we get a palindrome (51214133141215).

The spelling of 20002012121213 in words is "twenty trillion, two billion, twelve million, one hundred twenty-one thousand, two hundred thirteen".