411101621 has 20 divisors (see below), whose sum is σ = 489928512. Its totient is φ = 344780856.

The previous prime is 411101567. The next prime is 411101627. The reversal of 411101621 is 126101114.

It is not a de Polignac number, because 411101621 - 2¹⁸ = 410839477 is a prime.

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 411101621.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (411101627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 111026 + ... + 114668.

Almost surely, 2^411101621 is an apocalyptic number.

It is an amenable number.

411101621 is a deficient number, since it is larger than the sum of its proper divisors (78826891).

411101621 is an frugal number, since it uses more digits than its factorization.

411101621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3718 (or 3697 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 17.

The square root of 411101621 is about 20275.6410749451. The cubic root of 411101621 is about 743.5606466058.

Adding to 411101621 its reverse (126101114), we get a palindrome (537202735).

The spelling of 411101621 in words is "four hundred eleven million, one hundred one thousand, six hundred twenty-one".