20321332011 has 6 divisors (see below), whose sum is σ = 29353035140. Its totient is φ = 13547554668.

The previous prime is 20321332001. The next prime is 20321332019. The reversal of 20321332011 is 11023312302.

20321332011 is a `hidden beast` number, since 2 + 0 + 321 + 332 + 0 + 11 = 666.

It is not a de Polignac number, because 20321332011 - 2²² = 20317137707 is a prime.

It is a super-3 number, since 3×20321332011³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20321332019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1128962881 + ... + 1128962898.

Almost surely, 2^20321332011 is an apocalyptic number.

20321332011 is a deficient number, since it is larger than the sum of its proper divisors (9031703129).

20321332011 is a wasteful number, since it uses less digits than its factorization.

20321332011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2257925785 (or 2257925782 counting only the distinct ones).

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

Adding to 20321332011 its reverse (11023312302), we get a palindrome (31344644313).

The spelling of 20321332011 in words is "twenty billion, three hundred twenty-one million, three hundred thirty-two thousand, eleven".