212220102020 has 72 divisors (see below), whose sum is σ = 451860970176. Its totient is φ = 83722229952.

The previous prime is 212220102001. The next prime is 212220102023. The reversal of 212220102020 is 20201022212.

It is a junction number, because it is equal to n+sod(n) for n = 212220101986 and 212220102004.

It is not an unprimeable number, because it can be changed into a prime (212220102023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 55801439 + ... + 55805241.

It is an arithmetic number, because the mean of its divisors is an integer number (6275846808).

Almost surely, 2^212220102020 is an apocalyptic number.

212220102020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212220102020 is an abundant number, since it is smaller than the sum of its proper divisors (239640868156).

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

212220102020 is a wasteful number, since it uses less digits than its factorization.

212220102020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4281 (or 4176 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 212220102020 its reverse (20201022212), we get a palindrome (232421124232).

The spelling of 212220102020 in words is "two hundred twelve billion, two hundred twenty million, one hundred two thousand, twenty".