120021002123220 has 192 divisors, whose sum is σ = 425054616698880. Its totient is φ = 27830956982400.

The previous prime is 120021002123213. The next prime is 120021002123287. The reversal of 120021002123220 is 22321200120021.

120021002123220 is a `hidden beast` number, since 1 + 20 + 0 + 210 + 0 + 212 + 3 + 220 = 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 = 120021002123193 and 120021002123202.

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 439114596 + ... + 439387835.

It is an arithmetic number, because the mean of its divisors is an integer number (2213826128640).

Almost surely, 2^{120021002123220} is an apocalyptic number.

120021002123220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120021002123220 is an abundant number, since it is smaller than the sum of its proper divisors (305033614575660).

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

120021002123220 is a wasteful number, since it uses less digits than its factorization.

120021002123220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 878502483 (or 878502475 counting only the distinct ones).

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

Adding to 120021002123220 its reverse (22321200120021), we get a palindrome (142342202243241).

The spelling of 120021002123220 in words is "one hundred twenty trillion, twenty-one billion, two million, one hundred twenty-three thousand, two hundred twenty".