1221032030213 has 2 divisors, whose sum is σ = 1221032030214. Its totient is φ = 1221032030212.

The previous prime is 1221032030203. The next prime is 1221032030233. The reversal of 1221032030213 is 3120302301221.

It is an a-pointer prime, because the next prime (1221032030233) can be obtained adding 1221032030213 to its sum of digits (20).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1150123263844 + 70908766369 = 1072438^2 + 266287^2 .

It is a cyclic number.

It is not a de Polignac number, because 1221032030213 - 2⁶ = 1221032030149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1221032030203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 610516015106 + 610516015107.

It is an arithmetic number, because the mean of its divisors is an integer number (610516015107).

Almost surely, 2^{1221032030213} is an apocalyptic number.

It is an amenable number.

1221032030213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1221032030213 is an equidigital number, since it uses as much as digits as its factorization.

1221032030213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 1221032030213 its reverse (3120302301221), we get a palindrome (4341334331434).

The spelling of 1221032030213 in words is "one trillion, two hundred twenty-one billion, thirty-two million, thirty thousand, two hundred thirteen".