405100000221 has 8 divisors (see below), whose sum is σ = 617295238464. Its totient is φ = 231485714400.

The previous prime is 405100000181. The next prime is 405100000267. The reversal of 405100000221 is 122000001504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 405100000221 - 2⁶ = 405100000157 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 405100000221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405100000021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9645238080 + ... + 9645238121.

It is an arithmetic number, because the mean of its divisors is an integer number (77161904808).

Almost surely, 2^405100000221 is an apocalyptic number.

It is an amenable number.

405100000221 is a deficient number, since it is larger than the sum of its proper divisors (212195238243).

405100000221 is a wasteful number, since it uses less digits than its factorization.

405100000221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19290476211.

The product of its (nonzero) digits is 80, while the sum is 15.

Adding to 405100000221 its reverse (122000001504), we get a palindrome (527100001725).

The spelling of 405100000221 in words is "four hundred five billion, one hundred million, two hundred twenty-one", and thus it is an aban number.