412122181 has 2 divisors, whose sum is σ = 412122182. Its totient is φ = 412122180.

The previous prime is 412122121. The next prime is 412122197. The reversal of 412122181 is 181221214.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 332734081 + 79388100 = 18241^2 + 8910^2 .

It is a cyclic number.

It is not a de Polignac number, because 412122181 - 2²⁷ = 277904453 is a prime.

It is a super-2 number, since 2×412122181² = 339689384144393522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (412122101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 206061090 + 206061091.

It is an arithmetic number, because the mean of its divisors is an integer number (206061091).

Almost surely, 2^412122181 is an apocalyptic number.

It is an amenable number.

412122181 is a deficient number, since it is larger than the sum of its proper divisors (1).

412122181 is an equidigital number, since it uses as much as digits as its factorization.

412122181 is an evil number, because the sum of its binary digits is even.

The product of its digits is 256, while the sum is 22.

The square root of 412122181 is about 20300.7926199939. The cubic root of 412122181 is about 744.1754347200.

Adding to 412122181 its reverse (181221214), we get a palindrome (593343395).

The spelling of 412122181 in words is "four hundred twelve million, one hundred twenty-two thousand, one hundred eighty-one".