10212002221221 has 96 divisors (see below), whose sum is σ = 16562698454016. Its totient is φ = 6031501056000.

The previous prime is 10212002221217. The next prime is 10212002221231. The reversal of 10212002221221 is 12212220021201.

It is a happy number.

10212002221221 is a `hidden beast` number, since 1 + 0 + 21 + 200 + 2 + 221 + 221 = 666.

It is not a de Polignac number, because 10212002221221 - 2² = 10212002221217 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10212002221194 and 10212002221203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212002221231) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 853055766 + ... + 853067736.

It is an arithmetic number, because the mean of its divisors is an integer number (172528108896).

Almost surely, 2^{10212002221221} is an apocalyptic number.

It is an amenable number.

10212002221221 is a deficient number, since it is larger than the sum of its proper divisors (6350696232795).

10212002221221 is a wasteful number, since it uses less digits than its factorization.

10212002221221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16923 (or 16920 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 10212002221221 its reverse (12212220021201), we get a palindrome (22424222242422).

The spelling of 10212002221221 in words is "ten trillion, two hundred twelve billion, two million, two hundred twenty-one thousand, two hundred twenty-one".