10212211210221 has 8 divisors (see below), whose sum is σ = 15129201792960. Its totient is φ = 6808140806796.

The previous prime is 10212211210169. The next prime is 10212211210231. The reversal of 10212211210221 is 12201211221201.

10212211210221 is a `hidden beast` number, since 1 + 0 + 21 + 2 + 211 + 210 + 221 = 666.

It is not a de Polignac number, because 10212211210221 - 2¹⁰ = 10212211209197 is a prime.

It is a super-2 number, since 2×10212211210221² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 10212211210194 and 10212211210203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10212211210231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189115022385 + ... + 189115022438.

It is an arithmetic number, because the mean of its divisors is an integer number (1891150224120).

Almost surely, 2^{10212211210221} is an apocalyptic number.

It is an amenable number.

10212211210221 is a deficient number, since it is larger than the sum of its proper divisors (4916990582739).

10212211210221 is an equidigital number, since it uses as much as digits as its factorization.

10212211210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378230044832 (or 378230044826 counting only the distinct ones).

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

Adding to 10212211210221 its reverse (12201211221201), we get a palindrome (22413422431422).

The spelling of 10212211210221 in words is "ten trillion, two hundred twelve billion, two hundred eleven million, two hundred ten thousand, two hundred twenty-one".