1000122321222 has 192 divisors, whose sum is σ = 2333898178560. Its totient is φ = 308924928000.

The previous prime is 1000122321221. The next prime is 1000122321223. The reversal of 1000122321222 is 2221232210001.

1000122321222 is a `hidden beast` number, since 1 + 0 + 0 + 0 + 122 + 321 + 222 = 666.

It is an interprime number because it is at equal distance from previous prime (1000122321221) and next prime (1000122321223).

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 = 1000122321195 and 1000122321204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000122321221) 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 95 ways as a sum of consecutive naturals, for example, 624685222 + ... + 624686822.

It is an arithmetic number, because the mean of its divisors is an integer number (12155719680).

Almost surely, 2^{1000122321222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1000122321222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1166949089280).

1000122321222 is an abundant number, since it is smaller than the sum of its proper divisors (1333775857338).

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

1000122321222 is a wasteful number, since it uses less digits than its factorization.

1000122321222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2139 (or 2136 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

Adding to 1000122321222 its reverse (2221232210001), we get a palindrome (3221354531223).

The spelling of 1000122321222 in words is "one trillion, one hundred twenty-two million, three hundred twenty-one thousand, two hundred twenty-two".