2013220121 has 16 divisors (see below), whose sum is σ = 2354883840. Its totient is φ = 1700724480.

The previous prime is 2013220093. The next prime is 2013220141. The reversal of 2013220121 is 1210223102.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 2013220121 - 2⁶ = 2013220057 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2013220096 and 2013220105.

It is not an unprimeable number, because it can be changed into a prime (2013220141) 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, 53366 + ... + 82911.

It is an arithmetic number, because the mean of its divisors is an integer number (147180240).

Almost surely, 2^2013220121 is an apocalyptic number.

It is an amenable number.

2013220121 is a deficient number, since it is larger than the sum of its proper divisors (341663719).

2013220121 is a wasteful number, since it uses less digits than its factorization.

2013220121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136384.

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2013220121 is about 44868.9215493308. The cubic root of 2013220121 is about 1262.6910070905.

Adding to 2013220121 its reverse (1210223102), we get a palindrome (3223443223).

The spelling of 2013220121 in words is "two billion, thirteen million, two hundred twenty thousand, one hundred twenty-one".