10221122112222 has 16 divisors (see below), whose sum is σ = 23362564828032. Its totient is φ = 2920320603480.

The previous prime is 10221122112221. The next prime is 10221122112251. The reversal of 10221122112222 is 22221122112201.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10221122112221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121680025104 + ... + 121680025187.

It is an arithmetic number, because the mean of its divisors is an integer number (1460160301752).

Almost surely, 2^{10221122112222} is an apocalyptic number.

10221122112222 is an abundant number, since it is smaller than the sum of its proper divisors (13141442715810).

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

10221122112222 is a wasteful number, since it uses less digits than its factorization.

10221122112222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243360050303.

The product of its (nonzero) digits is 256, while the sum is 21.

Subtracting from 10221122112222 its sum of digits (21), we obtain a palindrome (10221122112201).

Adding to 10221122112222 its reverse (22221122112201), we get a palindrome (32442244224423).

The spelling of 10221122112222 in words is "ten trillion, two hundred twenty-one billion, one hundred twenty-two million, one hundred twelve thousand, two hundred twenty-two".