10212110221221 has 48 divisors (see below), whose sum is σ = 15657637806720. Its totient is φ = 6399820056960.

The previous prime is 10212110221207. The next prime is 10212110221273. The reversal of 10212110221221 is 12212201121201.

10212110221221 is a `hidden beast` number, since 1 + 0 + 212 + 1 + 10 + 221 + 221 = 666.

It is not a de Polignac number, because 10212110221221 - 2⁵ = 10212110221189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10212110221194 and 10212110221203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212110221121) 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, 42148395 + ... + 42389991.

It is an arithmetic number, because the mean of its divisors is an integer number (326200787640).

Almost surely, 2^{10212110221221} is an apocalyptic number.

It is an amenable number.

10212110221221 is a deficient number, since it is larger than the sum of its proper divisors (5445527585499).

10212110221221 is a wasteful number, since it uses less digits than its factorization.

10212110221221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 245146 (or 245143 counting only the distinct ones).

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

Adding to 10212110221221 its reverse (12212201121201), we get a palindrome (22424311342422).

The spelling of 10212110221221 in words is "ten trillion, two hundred twelve billion, one hundred ten million, two hundred twenty-one thousand, two hundred twenty-one".