2012220311 has 4 divisors (see below), whose sum is σ = 2046325800. Its totient is φ = 1978114824.

The previous prime is 2012220299. The next prime is 2012220349. The reversal of 2012220311 is 1130222102.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 2012220311 - 2¹⁴ = 2012203927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012220611) 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, 17052656 + ... + 17052773.

It is an arithmetic number, because the mean of its divisors is an integer number (511581450).

Almost surely, 2^2012220311 is an apocalyptic number.

2012220311 is a deficient number, since it is larger than the sum of its proper divisors (34105489).

2012220311 is an equidigital number, since it uses as much as digits as its factorization.

2012220311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34105488.

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

The square root of 2012220311 is about 44857.7787122813. The cubic root of 2012220311 is about 1262.4819456425.

Adding to 2012220311 its reverse (1130222102), we get a palindrome (3142442413).

The spelling of 2012220311 in words is "two billion, twelve million, two hundred twenty thousand, three hundred eleven".