401222243 has 16 divisors (see below), whose sum is σ = 429235200. Its totient is φ = 374406240.

The previous prime is 401222233. The next prime is 401222267. The reversal of 401222243 is 342222104.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401222243 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401222233) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 94868 + ... + 99006.

It is an arithmetic number, because the mean of its divisors is an integer number (26827200).

Almost surely, 2^401222243 is an apocalyptic number.

401222243 is a deficient number, since it is larger than the sum of its proper divisors (28012957).

401222243 is a wasteful number, since it uses less digits than its factorization.

401222243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4282.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 401222243 is about 20030.5327687508. The cubic root of 401222243 is about 737.5560002674.

Adding to 401222243 its reverse (342222104), we get a palindrome (743444347).

The spelling of 401222243 in words is "four hundred one million, two hundred twenty-two thousand, two hundred forty-three".