120221910 has 48 divisors (see below), whose sum is σ = 313120080. Its totient is φ = 32003520.

The previous prime is 120221891. The next prime is 120221923. The reversal of 120221910 is 19122021.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 94861 + ... + 96119.

It is an arithmetic number, because the mean of its divisors is an integer number (6523335).

Almost surely, 2^120221910 is an apocalyptic number.

120221910 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120221910 is an abundant number, since it is smaller than the sum of its proper divisors (192898170).

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

120221910 is a wasteful number, since it uses less digits than its factorization.

With its successor (120221911) it forms an eRAP, since the sums of their prime factors are consecutive (2333 and 2334).

120221910 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2333 (or 2330 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

The square root of 120221910 is about 10964.5752311706. The cubic root of 120221910 is about 493.5462704866.

Adding to 120221910 its reverse (19122021), we get a palindrome (139343931).

The spelling of 120221910 in words is "one hundred twenty million, two hundred twenty-one thousand, nine hundred ten".