210102212221220 has 24 divisors (see below), whose sum is σ = 481325067998208. Its totient is φ = 76400804444000.

The previous prime is 210102212221189. The next prime is 210102212221243. The reversal of 210102212221220 is 22122212201012.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 210102212221192 and 210102212221201.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 477505027556 + ... + 477505027995.

It is an arithmetic number, because the mean of its divisors is an integer number (20055211166592).

Almost surely, 2^{210102212221220} is an apocalyptic number.

210102212221220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

210102212221220 is an abundant number, since it is smaller than the sum of its proper divisors (271222855776988).

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

210102212221220 is a wasteful number, since it uses less digits than its factorization.

210102212221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 955010055571 (or 955010055569 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 210102212221220 its reverse (22122212201012), we get a palindrome (232224424422232).

The spelling of 210102212221220 in words is "two hundred ten trillion, one hundred two billion, two hundred twelve million, two hundred twenty-one thousand, two hundred twenty".