10212212222221 has 32 divisors (see below), whose sum is σ = 10938121286400. Its totient is φ = 9501067392000.

The previous prime is 10212212222207. The next prime is 10212212222263. The reversal of 10212212222221 is 12222221221201.

It is a cyclic number.

It is not a de Polignac number, because 10212212222221 - 2¹¹ = 10212212220173 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10212212222192 and 10212212222201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212212223221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 301860535 + ... + 301894363.

It is an arithmetic number, because the mean of its divisors is an integer number (341816290200).

Almost surely, 2^{10212212222221} is an apocalyptic number.

It is an amenable number.

10212212222221 is a deficient number, since it is larger than the sum of its proper divisors (725909064179).

10212212222221 is a wasteful number, since it uses less digits than its factorization.

10212212222221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34629.

The product of its (nonzero) digits is 512, while the sum is 22.

Adding to 10212212222221 its reverse (12222221221201), we get a palindrome (22434433443422).

The spelling of 10212212222221 in words is "ten trillion, two hundred twelve billion, two hundred twelve million, two hundred twenty-two thousand, two hundred twenty-one".