120221021200120 has 64 divisors (see below), whose sum is σ = 274356838895040. Its totient is φ = 47402513356800.

The previous prime is 120221021200099. The next prime is 120221021200123. The reversal of 120221021200120 is 21002120122021.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 120221021200094 and 120221021200103.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120221021200123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11845974 + ... + 19513306.

It is an arithmetic number, because the mean of its divisors is an integer number (4286825607735).

Almost surely, 2^{120221021200120} is an apocalyptic number.

120221021200120 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 120221021200120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137178419447520).

120221021200120 is an abundant number, since it is smaller than the sum of its proper divisors (154135817694920).

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

120221021200120 is a wasteful number, since it uses less digits than its factorization.

120221021200120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7672936 (or 7672932 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 120221021200120 its reverse (21002120122021), we get a palindrome (141223141322141).

The spelling of 120221021200120 in words is "one hundred twenty trillion, two hundred twenty-one billion, twenty-one million, two hundred thousand, one hundred twenty".