412100621 has 4 divisors (see below), whose sum is σ = 436341852. Its totient is φ = 387859392.

The previous prime is 412100617. The next prime is 412100641. The reversal of 412100621 is 126001214.

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 382789225 + 29311396 = 19565^2 + 5414^2 .

It is a cyclic number.

It is not a de Polignac number, because 412100621 - 2² = 412100617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 24241213 = 412100621 / (4 + 1 + 2 + 1 + 0 + 0 + 6 + 2 + 1).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 412100621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (412100641) 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, 12120590 + ... + 12120623.

It is an arithmetic number, because the mean of its divisors is an integer number (109085463).

Almost surely, 2^412100621 is an apocalyptic number.

It is an amenable number.

412100621 is a deficient number, since it is larger than the sum of its proper divisors (24241231).

412100621 is a wasteful number, since it uses less digits than its factorization.

412100621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24241230.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 412100621 is about 20300.2615992997. The cubic root of 412100621 is about 744.1624574179.

Adding to 412100621 its reverse (126001214), we get a palindrome (538101835).

The spelling of 412100621 in words is "four hundred twelve million, one hundred thousand, six hundred twenty-one".