411021111221 has 8 divisors (see below), whose sum is σ = 470256323520. Its totient is φ = 351915376608.

The previous prime is 411021111211. The next prime is 411021111251. The reversal of 411021111221 is 122111120114.

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

It is a cyclic number.

It is not a de Polignac number, because 411021111221 - 2¹⁰ = 411021110197 is a prime.

It is a super-2 number, since 2×411021111221² (a number of 24 digits) contains 22 as substring.

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 411021111221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (411021111211) 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, 32362616 + ... + 32375313.

It is an arithmetic number, because the mean of its divisors is an integer number (58782040440).

Almost surely, 2^411021111221 is an apocalyptic number.

It is an amenable number.

411021111221 is a deficient number, since it is larger than the sum of its proper divisors (59235212299).

411021111221 is an equidigital number, since it uses as much as digits as its factorization.

411021111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64738843.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 411021111221 its reverse (122111120114), we get a palindrome (533132231335).

The spelling of 411021111221 in words is "four hundred eleven billion, twenty-one million, one hundred eleven thousand, two hundred twenty-one".