2211222020212 has 12 divisors (see below), whose sum is σ = 3869648945316. Its totient is φ = 1105608035840.

The previous prime is 2211222020107. The next prime is 2211222020219. The reversal of 2211222020212 is 2120202221122.

It can be written as a sum of positive squares in 2 ways, for example, as 136919240676 + 2074302779536 = 370026^2 + 1440244^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 2211222020212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211222020219) 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 in 3 ways as a sum of consecutive naturals, for example, 2560662 + ... + 3313522.

It is an arithmetic number, because the mean of its divisors is an integer number (322470745443).

Almost surely, 2^{2211222020212} is an apocalyptic number.

It is an amenable number.

2211222020212 is a deficient number, since it is larger than the sum of its proper divisors (1658426925104).

2211222020212 is a wasteful number, since it uses less digits than its factorization.

2211222020212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1487138 (or 1487136 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 2211222020212 its reverse (2120202221122), we get a palindrome (4331424241334).

The spelling of 2211222020212 in words is "two trillion, two hundred eleven billion, two hundred twenty-two million, twenty thousand, two hundred twelve".