120221355 has 16 divisors (see below), whose sum is σ = 192656160. Its totient is φ = 64017408.

The previous prime is 120221329. The next prime is 120221357. The reversal of 120221355 is 553122021.

It is not a de Polignac number, because 120221355 - 2⁵ = 120221323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (120221357) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4141 + ... + 16049.

It is an arithmetic number, because the mean of its divisors is an integer number (12041010).

Almost surely, 2^120221355 is an apocalyptic number.

120221355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

120221355 is a deficient number, since it is larger than the sum of its proper divisors (72434805).

120221355 is a wasteful number, since it uses less digits than its factorization.

120221355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12590.

The product of its (nonzero) digits is 600, while the sum is 21.

The square root of 120221355 is about 10964.5499223634. The cubic root of 120221355 is about 493.5455110060.

Adding to 120221355 its reverse (553122021), we get a palindrome (673343376).

The spelling of 120221355 in words is "one hundred twenty million, two hundred twenty-one thousand, three hundred fifty-five".