10212102112221 has 48 divisors (see below), whose sum is σ = 14820653848000. Its totient is φ = 6775934860800.

The previous prime is 10212102112217. The next prime is 10212102112291. The reversal of 10212102112221 is 12221120121201.

10212102112221 is a `hidden beast` number, since 1 + 0 + 21 + 210 + 211 + 2 + 221 = 666.

It is not a de Polignac number, because 10212102112221 - 2² = 10212102112217 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 10212102112194 and 10212102112203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212102112291) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3714841155 + ... + 3714843903.

Almost surely, 2^{10212102112221} is an apocalyptic number.

It is an amenable number.

10212102112221 is a deficient number, since it is larger than the sum of its proper divisors (4608551735779).

10212102112221 is a wasteful number, since it uses less digits than its factorization.

10212102112221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5146 (or 5143 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 10212102112221 its reverse (12221120121201), we get a palindrome (22433222233422).

The spelling of 10212102112221 in words is "ten trillion, two hundred twelve billion, one hundred two million, one hundred twelve thousand, two hundred twenty-one".