221010210022122 has 48 divisors (see below), whose sum is σ = 479033856581280. Its totient is φ = 73642626856800.

The previous prime is 221010210022111. The next prime is 221010210022123. The reversal of 221010210022122 is 221220012010122.

It is a happy number.

221010210022122 is a `hidden beast` number, since 2 + 210 + 1 + 0 + 210 + 0 + 221 + 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 = 221010210022095 and 221010210022104.

It is not an unprimeable number, because it can be changed into a prime (221010210022123) 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 23 ways as a sum of consecutive naturals, for example, 876999597 + ... + 877251567.

It is an arithmetic number, because the mean of its divisors is an integer number (9979872012110).

Almost surely, 2^{221010210022122} is an apocalyptic number.

221010210022122 is an abundant number, since it is smaller than the sum of its proper divisors (258023646559158).

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

221010210022122 is a wasteful number, since it uses less digits than its factorization.

221010210022122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269939 (or 269936 counting only the distinct ones).

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

Adding to 221010210022122 its reverse (221220012010122), we get a palindrome (442230222032244).

The spelling of 221010210022122 in words is "two hundred twenty-one trillion, ten billion, two hundred ten million, twenty-two thousand, one hundred twenty-two".