212200012020 has 96 divisors (see below), whose sum is σ = 614877411456. Its totient is φ = 54636940800.

The previous prime is 212200012019. The next prime is 212200012021. The reversal of 212200012020 is 20210002212.

It is an interprime number because it is at equal distance from previous prime (212200012019) and next prime (212200012021).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 212200011987 and 212200012005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212200012021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 74011 + ... + 655650.

It is an arithmetic number, because the mean of its divisors is an integer number (6404973036).

Almost surely, 2^212200012020 is an apocalyptic number.

212200012020 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 212200012020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (307438705728).

212200012020 is an abundant number, since it is smaller than the sum of its proper divisors (402677399436).

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

212200012020 is a wasteful number, since it uses less digits than its factorization.

212200012020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729841 (or 729839 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 212200012020 its reverse (20210002212), we get a palindrome (232410014232).

The spelling of 212200012020 in words is "two hundred twelve billion, two hundred million, twelve thousand, twenty".