120001222020020 has 192 divisors, whose sum is σ = 283890487910400. Its totient is φ = 42240237312000.

The previous prime is 120001222019951. The next prime is 120001222020023. The reversal of 120001222020020 is 20020222100021.

It is a junction number, because it is equal to n+sod(n) for n = 120001222019977 and 120001222020004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120001222020023) 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, 220610780 + ... + 221154060.

It is an arithmetic number, because the mean of its divisors is an integer number (1478596291200).

Almost surely, 2^{120001222020020} is an apocalyptic number.

120001222020020 is a gapful number since it is divisible by the number (10) 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 120001222020020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (141945243955200).

120001222020020 is an abundant number, since it is smaller than the sum of its proper divisors (163889265890380).

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

120001222020020 is a wasteful number, since it uses less digits than its factorization.

120001222020020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543630 (or 543628 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 120001222020020 its reverse (20020222100021), we get a palindrome (140021444120041).

The spelling of 120001222020020 in words is "one hundred twenty trillion, one billion, two hundred twenty-two million, twenty thousand, twenty".