120421220 has 24 divisors (see below), whose sum is σ = 253108800. Its totient is φ = 48125792.

The previous prime is 120421211. The next prime is 120421241. The reversal of 120421220 is 22124021.

It is a junction number, because it is equal to n+sod(n) for n = 120421195 and 120421204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 30521 + ... + 34239.

It is an arithmetic number, because the mean of its divisors is an integer number (10546200).

Almost surely, 2^120421220 is an apocalyptic number.

120421220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

120421220 is an abundant number, since it is smaller than the sum of its proper divisors (132687580).

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

120421220 is a wasteful number, since it uses less digits than its factorization.

120421220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5347 (or 5345 counting only the distinct ones).

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

The square root of 120421220 is about 10973.6602826951. The cubic root of 120421220 is about 493.8188619439.

Adding to 120421220 its reverse (22124021), we get a palindrome (142545241).

The spelling of 120421220 in words is "one hundred twenty million, four hundred twenty-one thousand, two hundred twenty".