10011212102221 has 12 divisors (see below), whose sum is σ = 11004345520000. Its totient is φ = 9100865422440.

The previous prime is 10011212102191. The next prime is 10011212102233. The reversal of 10011212102221 is 12220121211001.

It is not a de Polignac number, because 10011212102221 - 2¹¹ = 10011212100173 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10011212102195 and 10011212102204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10011212100221) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3687730 + ... + 5798428.

Almost surely, 2^{10011212102221} is an apocalyptic number.

10011212102221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

10011212102221 is a deficient number, since it is larger than the sum of its proper divisors (993133417779).

10011212102221 is a wasteful number, since it uses less digits than its factorization.

10011212102221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2149920 (or 2149909 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 10011212102221 its reverse (12220121211001), we get a palindrome (22231333313222).

The spelling of 10011212102221 in words is "ten trillion, eleven billion, two hundred twelve million, one hundred two thousand, two hundred twenty-one".