1210220123213 has 2 divisors, whose sum is σ = 1210220123214. Its totient is φ = 1210220123212.

The previous prime is 1210220123209. The next prime is 1210220123249. The reversal of 1210220123213 is 3123210220121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1157608150084 + 52611973129 = 1075922^2 + 229373^2 .

It is a cyclic number.

It is not a de Polignac number, because 1210220123213 - 2² = 1210220123209 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1210220113213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 605110061606 + 605110061607.

It is an arithmetic number, because the mean of its divisors is an integer number (605110061607).

Almost surely, 2^{1210220123213} is an apocalyptic number.

It is an amenable number.

1210220123213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1210220123213 is an equidigital number, since it uses as much as digits as its factorization.

1210220123213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288, while the sum is 20.

Adding to 1210220123213 its reverse (3123210220121), we get a palindrome (4333430343334).

The spelling of 1210220123213 in words is "one trillion, two hundred ten billion, two hundred twenty million, one hundred twenty-three thousand, two hundred thirteen".