401112221 has 4 divisors (see below), whose sum is σ = 402268512. Its totient is φ = 399955932.

The previous prime is 401112209. The next prime is 401112233. The reversal of 401112221 is 122211104.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (401112209) and next prime (401112233).

It is a cyclic number.

It is not a de Polignac number, because 401112221 - 2¹⁰ = 401111197 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 401112196 and 401112205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401112251) 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, 577625 + ... + 578318.

It is an arithmetic number, because the mean of its divisors is an integer number (100567128).

Almost surely, 2^401112221 is an apocalyptic number.

It is an amenable number.

401112221 is a deficient number, since it is larger than the sum of its proper divisors (1156291).

401112221 is a wasteful number, since it uses less digits than its factorization.

401112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1156290.

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 401112221 is about 20027.7862231451. The cubic root of 401112221 is about 737.4885772817.

Adding to 401112221 its reverse (122211104), we get a palindrome (523323325).

The spelling of 401112221 in words is "four hundred one million, one hundred twelve thousand, two hundred twenty-one".