401222123 has 4 divisors (see below), whose sum is σ = 402039768. Its totient is φ = 400404480.

The previous prime is 401222113. The next prime is 401222141. The reversal of 401222123 is 321222104.

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

It is a cyclic number.

It is not a de Polignac number, because 401222123 - 2¹⁰ = 401221099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401222113) 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, 408086 + ... + 409067.

It is an arithmetic number, because the mean of its divisors is an integer number (100509942).

Almost surely, 2^401222123 is an apocalyptic number.

401222123 is a deficient number, since it is larger than the sum of its proper divisors (817645).

401222123 is an equidigital number, since it uses as much as digits as its factorization.

401222123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 817644.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 401222123 is about 20030.5297733235. The cubic root of 401222123 is about 737.5559267365. Note that the first 3 decimals are identical.

Adding to 401222123 its reverse (321222104), we get a palindrome (722444227).

The spelling of 401222123 in words is "four hundred one million, two hundred twenty-two thousand, one hundred twenty-three".