20010323021 has 8 divisors (see below), whose sum is σ = 22244726784. Its totient is φ = 17875226160.

The previous prime is 20010323009. The next prime is 20010323041. The reversal of 20010323021 is 12032301002.

It is a happy number.

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 20010323021 - 2¹⁸ = 20010060877 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20010322987 and 20010323005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20010323041) 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, 24826301 + ... + 24827106.

It is an arithmetic number, because the mean of its divisors is an integer number (2780590848).

Almost surely, 2^20010323021 is an apocalyptic number.

It is an amenable number.

20010323021 is a deficient number, since it is larger than the sum of its proper divisors (2234403763).

20010323021 is a wasteful number, since it uses less digits than its factorization.

20010323021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49653451.

The product of its (nonzero) digits is 72, while the sum is 14.

Adding to 20010323021 its reverse (12032301002), we get a palindrome (32042624023).

The spelling of 20010323021 in words is "twenty billion, ten million, three hundred twenty-three thousand, twenty-one".