20212312330021 has 8 divisors (see below), whose sum is σ = 23101867983744. Its totient is φ = 17323277292240.

The previous prime is 20212312330009. The next prime is 20212312330039. The reversal of 20212312330021 is 12003321321202.

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 20212312330021 - 2⁷ = 20212312329893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20212312329974 and 20212312330001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212312333021) 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, 130070785 + ... + 130226086.

It is an arithmetic number, because the mean of its divisors is an integer number (2887733497968).

Almost surely, 2^{20212312330021} is an apocalyptic number.

It is an amenable number.

20212312330021 is a deficient number, since it is larger than the sum of its proper divisors (2889555653723).

20212312330021 is a wasteful number, since it uses less digits than its factorization.

20212312330021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260307971.

The product of its (nonzero) digits is 864, while the sum is 22.

Adding to 20212312330021 its reverse (12003321321202), we get a palindrome (32215633651223).

The spelling of 20212312330021 in words is "twenty trillion, two hundred twelve billion, three hundred twelve million, three hundred thirty thousand, twenty-one".