401220211 has 8 divisors (see below), whose sum is σ = 478473984. Its totient is φ = 328950600.

The previous prime is 401220203. The next prime is 401220217. The reversal of 401220211 is 112022104.

It is a happy number.

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

It is not a de Polignac number, because 401220211 - 2³ = 401220203 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401220191 and 401220200.

It is not an unprimeable number, because it can be changed into a prime (401220217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1245865 + ... + 1246186.

It is an arithmetic number, because the mean of its divisors is an integer number (59809248).

Almost surely, 2^401220211 is an apocalyptic number.

401220211 is a deficient number, since it is larger than the sum of its proper divisors (77253773).

401220211 is a wasteful number, since it uses less digits than its factorization.

401220211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2492081.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 401220211 is about 20030.4820461216. The cubic root of 401220211 is about 737.5547551418.

Adding to 401220211 its reverse (112022104), we get a palindrome (513242315).

The spelling of 401220211 in words is "four hundred one million, two hundred twenty thousand, two hundred eleven".