1001221330 has 16 divisors (see below), whose sum is σ = 1805666904. Its totient is φ = 399717760.

The previous prime is 1001221301. The next prime is 1001221343. The reversal of 1001221330 is 331221001.

It can be written as a sum of positive squares in 4 ways, for example, as 489692641 + 511528689 = 22129^2 + 22617^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1001221330.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90877 + ... + 101296.

Almost surely, 2^1001221330 is an apocalyptic number.

1001221330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001221330 is a deficient number, since it is larger than the sum of its proper divisors (804445574).

1001221330 is a wasteful number, since it uses less digits than its factorization.

1001221330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192701.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1001221330 is about 31642.0816319028. The cubic root of 1001221330 is about 1000.4069443738.

Adding to 1001221330 its reverse (331221001), we get a palindrome (1332442331).

The spelling of 1001221330 in words is "one billion, one million, two hundred twenty-one thousand, three hundred thirty".