401010221 has 8 divisors (see below), whose sum is σ = 419029440. Its totient is φ = 383039712.

The previous prime is 401010191. The next prime is 401010223. The reversal of 401010221 is 122010104.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 401010221 - 2¹⁰ = 401009197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401010223) 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 in 7 ways as a sum of consecutive naturals, for example, 5201 + ... + 28793.

It is an arithmetic number, because the mean of its divisors is an integer number (52378680).

Almost surely, 2^401010221 is an apocalyptic number.

It is an amenable number.

401010221 is a deficient number, since it is larger than the sum of its proper divisors (18019219).

401010221 is a wasteful number, since it uses less digits than its factorization.

401010221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24355.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 401010221 is about 20025.2395990660. The cubic root of 401010221 is about 737.4260592729.

Adding to 401010221 its reverse (122010104), we get a palindrome (523020325).

The spelling of 401010221 in words is "four hundred one million, ten thousand, two hundred twenty-one".