212301321330021 has 64 divisors (see below), whose sum is σ = 373682721945600. Its totient is φ = 103797174620160.

The previous prime is 212301321330011. The next prime is 212301321330041. The reversal of 212301321330021 is 120033123103212.

It is not a de Polignac number, because 212301321330021 - 2²⁹ = 212300784459109 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 212301321329973 and 212301321330000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212301321330011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 243427485 + ... + 244298061.

It is an arithmetic number, because the mean of its divisors is an integer number (5838792530400).

Almost surely, 2^{212301321330021} is an apocalyptic number.

212301321330021 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

212301321330021 is a deficient number, since it is larger than the sum of its proper divisors (161381400615579).

212301321330021 is a wasteful number, since it uses less digits than its factorization.

212301321330021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 932714.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 212301321330021 its reverse (120033123103212), we get a palindrome (332334444433233).

The spelling of 212301321330021 in words is "two hundred twelve trillion, three hundred one billion, three hundred twenty-one million, three hundred thirty thousand, twenty-one".