20011201213 has 2 divisors, whose sum is σ = 20011201214. Its totient is φ = 20011201212.

The previous prime is 20011201207. The next prime is 20011201229. The reversal of 20011201213 is 31210211002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14761764004 + 5249437209 = 121498^2 + 72453^2 .

It is a cyclic number.

It is not a de Polignac number, because 20011201213 - 2²⁹ = 19474330301 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20011201193 and 20011201202.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20011201253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10005600606 + 10005600607.

It is an arithmetic number, because the mean of its divisors is an integer number (10005600607).

Almost surely, 2^20011201213 is an apocalyptic number.

It is an amenable number.

20011201213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20011201213 is an equidigital number, since it uses as much as digits as its factorization.

20011201213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 13.

Adding to 20011201213 its reverse (31210211002), we get a palindrome (51221412215).

The spelling of 20011201213 in words is "twenty billion, eleven million, two hundred one thousand, two hundred thirteen".