401221103 has 2 divisors, whose sum is σ = 401221104. Its totient is φ = 401221102.

The previous prime is 401221099. The next prime is 401221109. The reversal of 401221103 is 301122104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401221103 - 2² = 401221099 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401221109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200610551 + 200610552.

It is an arithmetic number, because the mean of its divisors is an integer number (200610552).

Almost surely, 2^401221103 is an apocalyptic number.

401221103 is a deficient number, since it is larger than the sum of its proper divisors (1).

401221103 is an equidigital number, since it uses as much as digits as its factorization.

401221103 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 401221103 is about 20030.5043121735. The cubic root of 401221103 is about 737.5553017230. Note that the first 3 decimals are identical.

Adding to 401221103 its reverse (301122104), we get a palindrome (702343207).

The spelling of 401221103 in words is "four hundred one million, two hundred twenty-one thousand, one hundred three".