120102111221220 has 36 divisors (see below), whose sum is σ = 364309737371580. Its totient is φ = 32027229658944.

The previous prime is 120102111221219. The next prime is 120102111221227. The reversal of 120102111221220 is 22122111201021.

120102111221220 is a `hidden beast` number, since 1 + 2 + 0 + 10 + 211 + 1 + 221 + 220 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 67813940346084 + 52288170875136 = 8234922^2 + 7231056^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 = 120102111221193 and 120102111221202.

It is not an unprimeable number, because it can be changed into a prime (120102111221227) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 333616975435 + ... + 333616975794.

Almost surely, 2^{120102111221220} is an apocalyptic number.

120102111221220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120102111221220 is an abundant number, since it is smaller than the sum of its proper divisors (244207626150360).

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

120102111221220 is a wasteful number, since it uses less digits than its factorization.

120102111221220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667233951244 (or 667233951239 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 120102111221220 its reverse (22122111201021), we get a palindrome (142224222422241).

The spelling of 120102111221220 in words is "one hundred twenty trillion, one hundred two billion, one hundred eleven million, two hundred twenty-one thousand, two hundred twenty".