220121313 has 8 divisors (see below), whose sum is σ = 294422208. Its totient is φ = 146283984.

The previous prime is 220121309. The next prime is 220121347. The reversal of 220121313 is 313121022.

220121313 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 220121313 - 2² = 220121309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 220121292 and 220121301.

It is not an unprimeable number, because it can be changed into a prime (220121303) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114781 + ... + 116682.

It is an arithmetic number, because the mean of its divisors is an integer number (36802776).

Almost surely, 2^220121313 is an apocalyptic number.

It is an amenable number.

220121313 is a deficient number, since it is larger than the sum of its proper divisors (74300895).

220121313 is a wasteful number, since it uses less digits than its factorization.

220121313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231783.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 220121313 is about 14836.4858709871. The cubic root of 220121313 is about 603.7920144452.

Adding to 220121313 its reverse (313121022), we get a palindrome (533242335).

The spelling of 220121313 in words is "two hundred twenty million, one hundred twenty-one thousand, three hundred thirteen".