212300120033021 has 4 divisors (see below), whose sum is σ = 212300405690844. Its totient is φ = 212299834375200.

The previous prime is 212300120033009. The next prime is 212300120033063. The reversal of 212300120033021 is 120330021003212.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 71054952948100 + 141245167084921 = 8429410^2 + 11884661^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-212300120033021 is a prime.

It is a super-2 number, since 2×212300120033021² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 212300120032984 and 212300120033002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212300120033321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141711200 + ... + 143201481.

It is an arithmetic number, because the mean of its divisors is an integer number (53075101422711).

Almost surely, 2^{212300120033021} is an apocalyptic number.

It is an amenable number.

212300120033021 is a deficient number, since it is larger than the sum of its proper divisors (285657823).

212300120033021 is an equidigital number, since it uses as much as digits as its factorization.

212300120033021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 285657822.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 212300120033021 its reverse (120330021003212), we get a palindrome (332630141036233).

The spelling of 212300120033021 in words is "two hundred twelve trillion, three hundred billion, one hundred twenty million, thirty-three thousand, twenty-one".