10221212102120 has 16 divisors (see below), whose sum is σ = 22997727229860. Its totient is φ = 4088484840832.

The previous prime is 10221212102089. The next prime is 10221212102183. The reversal of 10221212102120 is 2120121212201.

It can be written as a sum of positive squares in 2 ways, for example, as 10122845816164 + 98366285956 = 3181642^2 + 313634^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 127765151237 + ... + 127765151316.

Almost surely, 2^{10221212102120} is an apocalyptic number.

10221212102120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10221212102120 is an abundant number, since it is smaller than the sum of its proper divisors (12776515127740).

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

10221212102120 is a wasteful number, since it uses less digits than its factorization.

10221212102120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255530302564 (or 255530302560 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 10221212102120 its reverse (2120121212201), we get a palindrome (12341333314321).

The spelling of 10221212102120 in words is "ten trillion, two hundred twenty-one billion, two hundred twelve million, one hundred two thousand, one hundred twenty".