2013211121 has 4 divisors (see below), whose sum is σ = 2046214644. Its totient is φ = 1980207600.

The previous prime is 2013211097. The next prime is 2013211127. The reversal of 2013211121 is 1211123102.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 138321121 + 1874890000 = 11761^2 + 43300^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2013211121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2013211096 and 2013211105.

It is not an unprimeable number, because it can be changed into a prime (2013211127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16501670 + ... + 16501791.

It is an arithmetic number, because the mean of its divisors is an integer number (511553661).

Almost surely, 2^2013211121 is an apocalyptic number.

It is an amenable number.

2013211121 is a deficient number, since it is larger than the sum of its proper divisors (33003523).

2013211121 is an equidigital number, since it uses as much as digits as its factorization.

2013211121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33003522.

The product of its (nonzero) digits is 24, while the sum is 14.

The square root of 2013211121 is about 44868.8212570823. The cubic root of 2013211121 is about 1262.6891254887.

Adding to 2013211121 its reverse (1211123102), we get a palindrome (3224334223).

The spelling of 2013211121 in words is "two billion, thirteen million, two hundred eleven thousand, one hundred twenty-one".