212303120321 has 2 divisors, whose sum is σ = 212303120322. Its totient is φ = 212303120320.

The previous prime is 212303120299. The next prime is 212303120339. The reversal of 212303120321 is 123021303212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 154791886096 + 57511234225 = 393436^2 + 239815^2 .

It is a cyclic number.

It is not a de Polignac number, because 212303120321 - 2⁶ = 212303120257 is a prime.

It is a super-2 number, since 2×212303120321² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212303120293 and 212303120302.

It is not a weakly prime, because it can be changed into another prime (212303120521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106151560160 + 106151560161.

It is an arithmetic number, because the mean of its divisors is an integer number (106151560161).

Almost surely, 2^212303120321 is an apocalyptic number.

It is an amenable number.

212303120321 is a deficient number, since it is larger than the sum of its proper divisors (1).

212303120321 is an equidigital number, since it uses as much as digits as its factorization.

212303120321 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 212303120321 its reverse (123021303212), we get a palindrome (335324423533).

The spelling of 212303120321 in words is "two hundred twelve billion, three hundred three million, one hundred twenty thousand, three hundred twenty-one".