401030221 has 4 divisors (see below), whose sum is σ = 424620252. Its totient is φ = 377440192.

The previous prime is 401030219. The next prime is 401030237. The reversal of 401030221 is 122030104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 181575625 + 219454596 = 13475^2 + 14814^2 .

It is a cyclic number.

It is not a de Polignac number, because 401030221 - 2¹ = 401030219 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 (401030521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11794990 + ... + 11795023.

It is an arithmetic number, because the mean of its divisors is an integer number (106155063).

Almost surely, 2^401030221 is an apocalyptic number.

It is an amenable number.

401030221 is a deficient number, since it is larger than the sum of its proper divisors (23590031).

401030221 is a wasteful number, since it uses less digits than its factorization.

401030221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23590030.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 401030221 is about 20025.7389626450. The cubic root of 401030221 is about 737.4383185414.

Adding to 401030221 its reverse (122030104), we get a palindrome (523060325).

The spelling of 401030221 in words is "four hundred one million, thirty thousand, two hundred twenty-one".