212120300003020 has 48 divisors (see below), whose sum is σ = 471703437999360. Its totient is φ = 79848975878144.

The previous prime is 212120300003009. The next prime is 212120300003023. The reversal of 212120300003020 is 20300003021212.

It is a super-2 number, since 2×212120300003020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 212120300002985 and 212120300003003.

It is not an unprimeable number, because it can be changed into a prime (212120300003023) 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, 28189105 + ... + 34912264.

It is an arithmetic number, because the mean of its divisors is an integer number (9827154958320).

Almost surely, 2^{212120300003020} is an apocalyptic number.

212120300003020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212120300003020 is an abundant number, since it is smaller than the sum of its proper divisors (259583137996340).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

212120300003020 is a wasteful number, since it uses less digits than its factorization.

212120300003020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63111282 (or 63111280 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 212120300003020 its reverse (20300003021212), we get a palindrome (232420303024232).

The spelling of 212120300003020 in words is "two hundred twelve trillion, one hundred twenty billion, three hundred million, three thousand, twenty".