401222513 has 4 divisors (see below), whose sum is σ = 401935728. Its totient is φ = 400509300.

The previous prime is 401222467. The next prime is 401222531. The reversal of 401222513 is 315222104.

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 a cyclic number.

It is not a de Polignac number, because 401222513 - 2¹⁴ = 401206129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (401222533) 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, 355763 + ... + 356888.

It is an arithmetic number, because the mean of its divisors is an integer number (100483932).

Almost surely, 2^401222513 is an apocalyptic number.

It is an amenable number.

401222513 is a deficient number, since it is larger than the sum of its proper divisors (713215).

401222513 is an equidigital number, since it uses as much as digits as its factorization.

401222513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 713214.

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 401222513 is about 20030.5395084606. The cubic root of 401222513 is about 737.5561657120.

Adding to 401222513 its reverse (315222104), we get a palindrome (716444617).

The spelling of 401222513 in words is "four hundred one million, two hundred twenty-two thousand, five hundred thirteen".