212310020 has 48 divisors (see below), whose sum is σ = 481793088. Its totient is φ = 78122880.

The previous prime is 212310017. The next prime is 212310023. The reversal of 212310020 is 20013212.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (212310017) and next prime (212310023).

It is a junction number, because it is equal to n+sod(n) for n = 212309983 and 212310010.

It is not an unprimeable number, because it can be changed into a prime (212310023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 84827 + ... + 87293.

It is an arithmetic number, because the mean of its divisors is an integer number (10037356).

Almost surely, 2^212310020 is an apocalyptic number.

212310020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212310020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240896544).

212310020 is an abundant number, since it is smaller than the sum of its proper divisors (269483068).

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

212310020 is a wasteful number, since it uses less digits than its factorization.

212310020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2820 (or 2818 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 212310020 is about 14570.8620197983. The cubic root of 212310020 is about 596.5637092656.

Adding to 212310020 its reverse (20013212), we get a palindrome (232323232).

The spelling of 212310020 in words is "two hundred twelve million, three hundred ten thousand, twenty".