1221410411 has 4 divisors (see below), whose sum is σ = 1315365072. Its totient is φ = 1127455752.

The previous prime is 1221410369. The next prime is 1221410419. The reversal of 1221410411 is 1140141221.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1140141221 = 25819 ⋅44159.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1221410411 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 1221410411.

It is not an unprimeable number, because it can be changed into a prime (1221410419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46977311 + ... + 46977336.

It is an arithmetic number, because the mean of its divisors is an integer number (328841268).

Almost surely, 2^1221410411 is an apocalyptic number.

1221410411 is a deficient number, since it is larger than the sum of its proper divisors (93954661).

1221410411 is an equidigital number, since it uses as much as digits as its factorization.

1221410411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93954660.

The product of its (nonzero) digits is 64, while the sum is 17.

The square root of 1221410411 is about 34948.6825359698. The cubic root of 1221410411 is about 1068.9413382630.

Adding to 1221410411 its reverse (1140141221), we get a palindrome (2361551632).

The spelling of 1221410411 in words is "one billion, two hundred twenty-one million, four hundred ten thousand, four hundred eleven".