1222020011213 has 2 divisors, whose sum is σ = 1222020011214. Its totient is φ = 1222020011212.

The previous prime is 1222020011197. The next prime is 1222020011273. The reversal of 1222020011213 is 3121100202221.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 678559120009 + 543460891204 = 823747^2 + 737198^2 .

It is a cyclic number.

It is not a de Polignac number, because 1222020011213 - 2⁴ = 1222020011197 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1222020011191 and 1222020011200.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1222020011273) 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, 611010005606 + 611010005607.

It is an arithmetic number, because the mean of its divisors is an integer number (611010005607).

Almost surely, 2^{1222020011213} is an apocalyptic number.

It is an amenable number.

1222020011213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1222020011213 is an equidigital number, since it uses as much as digits as its factorization.

1222020011213 is an odious number, because the sum of its binary digits is odd.

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

Adding to 1222020011213 its reverse (3121100202221), we get a palindrome (4343120213434).

The spelling of 1222020011213 in words is "one trillion, two hundred twenty-two billion, twenty million, eleven thousand, two hundred thirteen".