10221210021222 has 48 divisors (see below), whose sum is σ = 22158270650880. Its totient is φ = 3405175804800.

The previous prime is 10221210021179. The next prime is 10221210021229. The reversal of 10221210021222 is 22212001212201.

It is a happy number.

10221210021222 is a `hidden beast` number, since 1 + 0 + 221 + 210 + 0 + 212 + 22 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 10221210021195 and 10221210021204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221210021229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 308027472 + ... + 308060652.

It is an arithmetic number, because the mean of its divisors is an integer number (461630638560).

Almost surely, 2^{10221210021222} is an apocalyptic number.

10221210021222 is an abundant number, since it is smaller than the sum of its proper divisors (11937060629658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

10221210021222 is a wasteful number, since it uses less digits than its factorization.

10221210021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42189 (or 42186 counting only the distinct ones).

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

Adding to 10221210021222 its reverse (22212001212201), we get a palindrome (32433211233423).

The spelling of 10221210021222 in words is "ten trillion, two hundred twenty-one billion, two hundred ten million, twenty-one thousand, two hundred twenty-two".