1303221121 has 8 divisors (see below), whose sum is σ = 1378073088. Its totient is φ = 1230420000.

The previous prime is 1303221119. The next prime is 1303221133. The reversal of 1303221121 is 1211223031.

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 1303221121 - 2¹ = 1303221119 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1303221095 and 1303221104.

It is not an unprimeable number, because it can be changed into a prime (1303221421) 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, 511405 + ... + 513946.

It is an arithmetic number, because the mean of its divisors is an integer number (172259136).

Almost surely, 2^1303221121 is an apocalyptic number.

It is an amenable number.

1303221121 is a deficient number, since it is larger than the sum of its proper divisors (74851967).

1303221121 is a wasteful number, since it uses less digits than its factorization.

1303221121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1025423.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 1303221121 is about 36100.1540301423. The cubic root of 1303221121 is about 1092.2935520269.

Adding to 1303221121 its reverse (1211223031), we get a palindrome (2514444152).

The spelling of 1303221121 in words is "one billion, three hundred three million, two hundred twenty-one thousand, one hundred twenty-one".