20321440101 has 24 divisors (see below), whose sum is σ = 31289232000. Its totient is φ = 12672122112.

The previous prime is 20321440099. The next prime is 20321440169. The reversal of 20321440101 is 10104412302.

20321440101 is a `hidden beast` number, since 203 + 21 + 440 + 1 + 0 + 1 = 666.

It is not a de Polignac number, because 20321440101 - 2¹ = 20321440099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321440001) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 738636 + ... + 765653.

It is an arithmetic number, because the mean of its divisors is an integer number (1303718000).

Almost surely, 2^20321440101 is an apocalyptic number.

It is an amenable number.

20321440101 is a deficient number, since it is larger than the sum of its proper divisors (10967791899).

20321440101 is a wasteful number, since it uses less digits than its factorization.

20321440101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1504393 (or 1504390 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 20321440101 its reverse (10104412302), we get a palindrome (30425852403).

The spelling of 20321440101 in words is "twenty billion, three hundred twenty-one million, four hundred forty thousand, one hundred one".