20100303321 has 16 divisors (see below), whose sum is σ = 30675532800. Its totient is φ = 11468450448.

The previous prime is 20100303299. The next prime is 20100303343. The reversal of 20100303321 is 12330300102.

It is an interprime number because it is at equal distance from previous prime (20100303299) and next prime (20100303343).

It is not a de Polignac number, because 20100303321 - 2¹³ = 20100295129 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 20100303321.

It is not an unprimeable number, because it can be changed into a prime (20100303121) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 712381 + ... + 740058.

It is an arithmetic number, because the mean of its divisors is an integer number (1917220800).

Almost surely, 2^20100303321 is an apocalyptic number.

20100303321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20100303321 is a deficient number, since it is larger than the sum of its proper divisors (10575229479).

20100303321 is a wasteful number, since it uses less digits than its factorization.

20100303321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453108.

The product of its (nonzero) digits is 108, while the sum is 15.

Adding to 20100303321 its reverse (12330300102), we get a palindrome (32430603423).

The spelling of 20100303321 in words is "twenty billion, one hundred million, three hundred three thousand, three hundred twenty-one".