12202381 has 2 divisors, whose sum is σ = 12202382. Its totient is φ = 12202380.

The previous prime is 12202367. The next prime is 12202423. The reversal of 12202381 is 18320221.

12202381 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., 12013156 + 189225 = 3466^2 + 435^2 .

It is an emirp because it is prime and its reverse (18320221) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 12202381 - 2¹¹ = 12200333 is a prime.

It is a super-2 number, since 2×12202381² = 297796204138322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12202331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6101190 + 6101191.

It is an arithmetic number, because the mean of its divisors is an integer number (6101191).

Almost surely, 2^12202381 is an apocalyptic number.

It is an amenable number.

12202381 is a deficient number, since it is larger than the sum of its proper divisors (1).

12202381 is an equidigital number, since it uses as much as digits as its factorization.

12202381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 19.

The square root of 12202381 is about 3493.1906618448. The cubic root of 12202381 is about 230.2227269057. Note that the first 3 decimals are identical.

The spelling of 12202381 in words is "twelve million, two hundred two thousand, three hundred eighty-one".