401221106 has 16 divisors (see below), whose sum is σ = 707047488. Its totient is φ = 168344400.

The previous prime is 401221103. The next prime is 401221109. The reversal of 401221106 is 601122104.

It is an interprime number because it is at equal distance from previous prime (401221103) and next prime (401221109).

It is not an unprimeable number, because it can be changed into a prime (401221103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 701150 + ... + 701721.

It is an arithmetic number, because the mean of its divisors is an integer number (44190468).

Almost surely, 2^401221106 is an apocalyptic number.

401221106 is a deficient number, since it is larger than the sum of its proper divisors (305826382).

401221106 is a wasteful number, since it uses less digits than its factorization.

401221106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1402897.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 401221106 is about 20030.5043870593. The cubic root of 401221106 is about 737.5553035613. Note that the first 3 decimals are identical.

The spelling of 401221106 in words is "four hundred one million, two hundred twenty-one thousand, one hundred six".