1002201321 has 16 divisors (see below), whose sum is σ = 1474130880. Its totient is φ = 600568320.

The previous prime is 1002201307. The next prime is 1002201353. The reversal of 1002201321 is 1231022001.

It is not a de Polignac number, because 1002201321 - 2¹⁷ = 1002070249 is a prime.

It is a super-3 number, since 3×1002201321³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1002201297 and 1002201306.

It is not an unprimeable number, because it can be changed into a prime (1002201371) 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 15 ways as a sum of consecutive naturals, for example, 167680 + ... + 173553.

It is an arithmetic number, because the mean of its divisors is an integer number (92133180).

Almost surely, 2^1002201321 is an apocalyptic number.

1002201321 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1002201321 is a deficient number, since it is larger than the sum of its proper divisors (471929559).

1002201321 is a wasteful number, since it uses less digits than its factorization.

1002201321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 341336.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1002201321 is about 31657.5634090812. The cubic root of 1002201321 is about 1000.7332359004.

Adding to 1002201321 its reverse (1231022001), we get a palindrome (2233223322).

The spelling of 1002201321 in words is "one billion, two million, two hundred one thousand, three hundred twenty-one".