2211021212 has 6 divisors (see below), whose sum is σ = 3869287128. Its totient is φ = 1105510604.

The previous prime is 2211021133. The next prime is 2211021229. The reversal of 2211021212 is 2121201122.

It is a super-2 number, since 2×2211021212² = 9777229599827897888, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276377648 + ... + 276377655.

It is an arithmetic number, because the mean of its divisors is an integer number (644881188).

Almost surely, 2^2211021212 is an apocalyptic number.

It is an amenable number.

2211021212 is a deficient number, since it is larger than the sum of its proper divisors (1658265916).

2211021212 is a wasteful number, since it uses less digits than its factorization.

2211021212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 552755307 (or 552755305 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

The square root of 2211021212 is about 47021.4973389832. The cubic root of 2211021212 is about 1302.7596626440.

Adding to 2211021212 its reverse (2121201122), we get a palindrome (4332222334).

The spelling of 2211021212 in words is "two billion, two hundred eleven million, twenty-one thousand, two hundred twelve".