20122223121000 has 1536 divisors, whose sum is σ = 94176060825600. Its totient is φ = 3859539840000.

The previous prime is 20122223120969. The next prime is 20122223121001. The reversal of 20122223121000 is 12132222102.

20122223121000 is a `hidden beast` number, since 2 + 0 + 1 + 222 + 231 + 210 + 0 + 0 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (20122223121001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 383 ways as a sum of consecutive naturals, for example, 351322365 + ... + 351379635.

It is an arithmetic number, because the mean of its divisors is an integer number (61312539600).

Almost surely, 2^{20122223121000} is an apocalyptic number.

20122223121000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20122223121000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47088030412800).

20122223121000 is an abundant number, since it is smaller than the sum of its proper divisors (74053837704600).

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

20122223121000 is a wasteful number, since it uses less digits than its factorization.

20122223121000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57345 (or 57312 counting only the distinct ones).

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

Adding to 20122223121000 its reverse (12132222102), we get a palindrome (20134355343102).

The spelling of 20122223121000 in words is "twenty trillion, one hundred twenty-two billion, two hundred twenty-three million, one hundred twenty-one thousand".