405221331441002 has 4 divisors (see below), whose sum is σ = 607831997161506. Its totient is φ = 202610665720500.

The previous prime is 405221331441001. The next prime is 405221331441037. The reversal of 405221331441002 is 200144133122504.

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

It can be written as a sum of positive squares in only one way, i.e., 399688020855601 + 5533310585401 = 19992199^2 + 2352299^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 405221331441002.

It is not an unprimeable number, because it can be changed into a prime (405221331441001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101305332860249 + ... + 101305332860252.

Almost surely, 2^{405221331441002} is an apocalyptic number.

405221331441002 is a deficient number, since it is larger than the sum of its proper divisors (202610665720504).

405221331441002 is a wasteful number, since it uses less digits than its factorization.

405221331441002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202610665720503.

The product of its (nonzero) digits is 23040, while the sum is 32.

Adding to 405221331441002 its reverse (200144133122504), we get a palindrome (605365464563506).

The spelling of 405221331441002 in words is "four hundred five trillion, two hundred twenty-one billion, three hundred thirty-one million, four hundred forty-one thousand, two".