220121013 has 8 divisors (see below), whose sum is σ = 335422528. Its totient is φ = 125783424.

The previous prime is 220120993. The next prime is 220121021. The reversal of 220121013 is 310121022.

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

It is not a de Polignac number, because 220121013 - 2¹² = 220116917 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 220121013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220121093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5240956 + ... + 5240997.

It is an arithmetic number, because the mean of its divisors is an integer number (41927816).

Almost surely, 2^220121013 is an apocalyptic number.

It is an amenable number.

220121013 is a deficient number, since it is larger than the sum of its proper divisors (115301515).

220121013 is a wasteful number, since it uses less digits than its factorization.

220121013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10481963.

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 220121013 is about 14836.4757607728. The cubic root of 220121013 is about 603.7917401454.

Adding to 220121013 its reverse (310121022), we get a palindrome (530242035).

Subtracting 220121013 from its reverse (310121022), we obtain a palindrome (90000009).

The spelling of 220121013 in words is "two hundred twenty million, one hundred twenty-one thousand, thirteen".