1021221411 has 8 divisors (see below), whose sum is σ = 1556146944. Its totient is φ = 583555080.

The previous prime is 1021221379. The next prime is 1021221469. The reversal of 1021221411 is 1141221201.

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

It is not a de Polignac number, because 1021221411 - 2⁵ = 1021221379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1021221911) 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 7 ways as a sum of consecutive naturals, for example, 24314775 + ... + 24314816.

It is an arithmetic number, because the mean of its divisors is an integer number (194518368).

Almost surely, 2^1021221411 is an apocalyptic number.

1021221411 is a deficient number, since it is larger than the sum of its proper divisors (534925533).

1021221411 is an equidigital number, since it uses as much as digits as its factorization.

1021221411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48629601.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 1021221411 is about 31956.5550552621. Note that the first 3 decimals coincide. The cubic root of 1021221411 is about 1007.0243466898.

Adding to 1021221411 its reverse (1141221201), we get a palindrome (2162442612).

The spelling of 1021221411 in words is "one billion, twenty-one million, two hundred twenty-one thousand, four hundred eleven".