401122013 has 4 divisors (see below), whose sum is σ = 401525340. Its totient is φ = 400718688.

The previous prime is 401121991. The next prime is 401122027. The reversal of 401122013 is 310221104.

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 128640964 + 272481049 = 11342^2 + 16507^2 .

It is a cyclic number.

It is not a de Polignac number, because 401122013 - 2⁶ = 401121949 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 (401122213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 200168 + ... + 202161.

It is an arithmetic number, because the mean of its divisors is an integer number (100381335).

Almost surely, 2^401122013 is an apocalyptic number.

It is an amenable number.

401122013 is a deficient number, since it is larger than the sum of its proper divisors (403327).

401122013 is an equidigital number, since it uses as much as digits as its factorization.

401122013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403326.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 401122013 is about 20028.0306820216. The cubic root of 401122013 is about 737.4945784529.

Adding to 401122013 its reverse (310221104), we get a palindrome (711343117).

Subtracting from 401122013 its reverse (310221104), we obtain a palindrome (90900909).

The spelling of 401122013 in words is "four hundred one million, one hundred twenty-two thousand, thirteen".