20122001213 has 2 divisors, whose sum is σ = 20122001214. Its totient is φ = 20122001212.

The previous prime is 20122001183. The next prime is 20122001233. The reversal of 20122001213 is 31210022102.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16527159364 + 3594841849 = 128558^2 + 59957^2 .

It is a cyclic number.

It is not a de Polignac number, because 20122001213 - 2³⁰ = 19048259389 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20122001233) 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 as a sum of consecutive naturals, namely, 10061000606 + 10061000607.

It is an arithmetic number, because the mean of its divisors is an integer number (10061000607).

Almost surely, 2^20122001213 is an apocalyptic number.

It is an amenable number.

20122001213 is a deficient number, since it is larger than the sum of its proper divisors (1).

20122001213 is an equidigital number, since it uses as much as digits as its factorization.

20122001213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20122001213 its reverse (31210022102), we get a palindrome (51332023315).

The spelling of 20122001213 in words is "twenty billion, one hundred twenty-two million, one thousand, two hundred thirteen".