20321032101 has 16 divisors (see below), whose sum is σ = 27268300800. Its totient is φ = 13460683248.

The previous prime is 20321032087. The next prime is 20321032111. The reversal of 20321032101 is 10123012302.

It is a de Polignac number, because none of the positive numbers 2^k-20321032101 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20321032111) 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, 672030 + ... + 701616.

It is an arithmetic number, because the mean of its divisors is an integer number (1704268800).

Almost surely, 2^20321032101 is an apocalyptic number.

It is an amenable number.

20321032101 is a deficient number, since it is larger than the sum of its proper divisors (6947268699).

20321032101 is a wasteful number, since it uses less digits than its factorization.

20321032101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31048.

The product of its (nonzero) digits is 72, while the sum is 15.

Adding to 20321032101 its reverse (10123012302), we get a palindrome (30444044403).

The spelling of 20321032101 in words is "twenty billion, three hundred twenty-one million, thirty-two thousand, one hundred one".