20120352321 has 8 divisors (see below), whose sum is σ = 27993533760. Its totient is φ = 12830369552.

The previous prime is 20120352319. The next prime is 20120352323. The reversal of 20120352321 is 12325302102.

It is an interprime number because it is at equal distance from previous prime (20120352319) and next prime (20120352323).

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 20120352321 - 2¹ = 20120352319 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20120352323) 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, 145799586 + ... + 145799723.

It is an arithmetic number, because the mean of its divisors is an integer number (3499191720).

Almost surely, 2^20120352321 is an apocalyptic number.

It is an amenable number.

20120352321 is a deficient number, since it is larger than the sum of its proper divisors (7873181439).

20120352321 is a wasteful number, since it uses less digits than its factorization.

20120352321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291599335.

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 20120352321 its reverse (12325302102), we get a palindrome (32445654423).

The spelling of 20120352321 in words is "twenty billion, one hundred twenty million, three hundred fifty-two thousand, three hundred twenty-one".