20122231221120 has 512 divisors, whose sum is σ = 73661591393280. Its totient is φ = 4576887963648.

The previous prime is 20122231221041. The next prime is 20122231221121. The reversal of 20122231221120 is 2112213222102.

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 (20122231221121) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2363701984 + ... + 2363710496.

It is an arithmetic number, because the mean of its divisors is an integer number (143870295690).

Almost surely, 2^{20122231221120} is an apocalyptic number.

20122231221120 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 20122231221120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36830795696640).

20122231221120 is an abundant number, since it is smaller than the sum of its proper divisors (53539360172160).

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

20122231221120 is a wasteful number, since it uses less digits than its factorization.

20122231221120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9382 (or 9370 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

Adding to 20122231221120 its reverse (2112213222102), we get a palindrome (22234444443222).

The spelling of 20122231221120 in words is "twenty trillion, one hundred twenty-two billion, two hundred thirty-one million, two hundred twenty-one thousand, one hundred twenty".