120920220 has 36 divisors (see below), whose sum is σ = 366791880. Its totient is φ = 32245344.

The previous prime is 120920213. The next prime is 120920231. The reversal of 120920220 is 22029021.

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 = 120920193 and 120920202.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 335710 + ... + 336069.

Almost surely, 2^120920220 is an apocalyptic number.

120920220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120920220 is an abundant number, since it is smaller than the sum of its proper divisors (245871660).

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

120920220 is a wasteful number, since it uses less digits than its factorization.

120920220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 671794 (or 671789 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 120920220 is about 10996.3730384159. The cubic root of 120920220 is about 494.5000155059.

Adding to 120920220 its reverse (22029021), we get a palindrome (142949241).

The spelling of 120920220 in words is "one hundred twenty million, nine hundred twenty thousand, two hundred twenty".