212322112102381 has 2 divisors, whose sum is σ = 212322112102382. Its totient is φ = 212322112102380.

The previous prime is 212322112102363. The next prime is 212322112102421. The reversal of 212322112102381 is 183201211223212.

212322112102381 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 163904646375625 + 48417465726756 = 12802525^2 + 6958266^2 .

It is a cyclic number.

It is not a de Polignac number, because 212322112102381 - 2¹¹ = 212322112100333 is a prime.

It is a super-2 number, since 2×212322112102381² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212322112102781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106161056051190 + 106161056051191.

It is an arithmetic number, because the mean of its divisors is an integer number (106161056051191).

Almost surely, 2^{212322112102381} is an apocalyptic number.

It is an amenable number.

212322112102381 is a deficient number, since it is larger than the sum of its proper divisors (1).

212322112102381 is an equidigital number, since it uses as much as digits as its factorization.

212322112102381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 31.

Adding to 212322112102381 its reverse (183201211223212), we get a palindrome (395523323325593).

The spelling of 212322112102381 in words is "two hundred twelve trillion, three hundred twenty-two billion, one hundred twelve million, one hundred two thousand, three hundred eighty-one".