120221610 has 32 divisors (see below), whose sum is σ = 290647872. Its totient is φ = 31824000.

The previous prime is 120221597. The next prime is 120221639. The reversal of 120221610 is 16122021.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 120221610.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10516 + ... + 18735.

It is an arithmetic number, because the mean of its divisors is an integer number (9082746).

Almost surely, 2^120221610 is an apocalyptic number.

120221610 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

120221610 is an abundant number, since it is smaller than the sum of its proper divisors (170426262).

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

120221610 is a wasteful number, since it uses less digits than its factorization.

120221610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29398.

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 120221610 is about 10964.5615507416. The cubic root of 120221610 is about 493.5458599568.

Adding to 120221610 its reverse (16122021), we get a palindrome (136343631).

The spelling of 120221610 in words is "one hundred twenty million, two hundred twenty-one thousand, six hundred ten".