123210211213 has 2 divisors, whose sum is σ = 123210211214. Its totient is φ = 123210211212.

The previous prime is 123210211139. The next prime is 123210211231. The reversal of 123210211213 is 312112012321.

Together with next prime (123210211231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 117185036329 + 6025174884 = 342323^2 + 77622^2 .

It is an emirp because it is prime and its reverse (312112012321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123210211213 - 2¹³ = 123210203021 is a prime.

It is a super-2 number, since 2×123210211213² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123210211273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61605105606 + 61605105607.

It is an arithmetic number, because the mean of its divisors is an integer number (61605105607).

Almost surely, 2^123210211213 is an apocalyptic number.

It is an amenable number.

123210211213 is a deficient number, since it is larger than the sum of its proper divisors (1).

123210211213 is an equidigital number, since it uses as much as digits as its factorization.

123210211213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 123210211213 its reverse (312112012321), we get a palindrome (435322223534).

The spelling of 123210211213 in words is "one hundred twenty-three billion, two hundred ten million, two hundred eleven thousand, two hundred thirteen".