2011220212 has 6 divisors (see below), whose sum is σ = 3519635378. Its totient is φ = 1005610104.

The previous prime is 2011220179. The next prime is 2011220219. The reversal of 2011220212 is 2120221102.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1657629796 + 353590416 = 40714^2 + 18804^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2011220192 and 2011220201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2011220219) 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 as a sum of consecutive naturals, namely, 251402523 + ... + 251402530.

Almost surely, 2^2011220212 is an apocalyptic number.

It is an amenable number.

2011220212 is a deficient number, since it is larger than the sum of its proper divisors (1508415166).

2011220212 is a wasteful number, since it uses less digits than its factorization.

2011220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 502805057 (or 502805055 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 2011220212 is about 44846.6298845298. The cubic root of 2011220212 is about 1262.2727544721.

Adding to 2011220212 its reverse (2120221102), we get a palindrome (4131441314).

The spelling of 2011220212 in words is "two billion, eleven million, two hundred twenty thousand, two hundred twelve".