2121211211 has 8 divisors (see below), whose sum is σ = 2427172320. Its totient is φ = 1815982848.

The previous prime is 2121211207. The next prime is 2121211237. The reversal of 2121211211 is 1121121212.

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

It is a cyclic number.

It is not a de Polignac number, because 2121211211 - 2² = 2121211207 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2121211201) 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, 176966 + ... + 188571.

It is an arithmetic number, because the mean of its divisors is an integer number (303396540).

Almost surely, 2^2121211211 is an apocalyptic number.

2121211211 is a deficient number, since it is larger than the sum of its proper divisors (305961109).

2121211211 is an equidigital number, since it uses as much as digits as its factorization.

2121211211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 366373.

The product of its digits is 16, while the sum is 14.

The square root of 2121211211 is about 46056.6087657352. The cubic root of 2121211211 is about 1284.8762589340.

Adding to 2121211211 its reverse (1121121212), we get a palindrome (3242332423).

It can be divided in two parts, 21212 and 11211, that added together give a palindrome (32423).

The spelling of 2121211211 in words is "two billion, one hundred twenty-one million, two hundred eleven thousand, two hundred eleven".