20113032321 has 20 divisors (see below), whose sum is σ = 30051225072. Its totient is φ = 13406086008.

The previous prime is 20113032319. The next prime is 20113032361. The reversal of 20113032321 is 12323031102.

It is not a de Polignac number, because 20113032321 - 2¹ = 20113032319 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20113032294 and 20113032303.

It is not an unprimeable number, because it can be changed into a prime (20113032361) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 454066 + ... + 496388.

Almost surely, 2^20113032321 is an apocalyptic number.

It is an amenable number.

20113032321 is a deficient number, since it is larger than the sum of its proper divisors (9938192751).

20113032321 is an equidigital number, since it uses as much as digits as its factorization.

20113032321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48202 (or 48193 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 20113032321 its reverse (12323031102), we get a palindrome (32436063423).

The spelling of 20113032321 in words is "twenty billion, one hundred thirteen million, thirty-two thousand, three hundred twenty-one".