1421221024 has 24 divisors (see below), whose sum is σ = 2801923488. Its totient is φ = 709621440.

The previous prime is 1421220959. The next prime is 1421221057. The reversal of 1421221024 is 4201221241.

It is a junction number, because it is equal to n+sod(n) for n = 1421220992 and 1421221010.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 7282 + ... + 53809.

It is an arithmetic number, because the mean of its divisors is an integer number (116746812).

Almost surely, 2^1421221024 is an apocalyptic number.

It is an amenable number.

1421221024 is a deficient number, since it is larger than the sum of its proper divisors (1380702464).

1421221024 is an equidigital number, since it uses as much as digits as its factorization.

1421221024 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61828 (or 61820 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1421221024 is about 37699.0851878398. The cubic root of 1421221024 is about 1124.3129365952.

Adding to 1421221024 its reverse (4201221241), we get a palindrome (5622442265).

The spelling of 1421221024 in words is "one billion, four hundred twenty-one million, two hundred twenty-one thousand, twenty-four".