2021312222 has 16 divisors (see below), whose sum is σ = 3052637280. Its totient is φ = 1003776768.

The previous prime is 2021312203. The next prime is 2021312233. The reversal of 2021312222 is 2222131202.

It is a self number, because there is not a number n which added to its sum of digits gives 2021312222.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 696278 + ... + 699174.

It is an arithmetic number, because the mean of its divisors is an integer number (190789830).

Almost surely, 2^2021312222 is an apocalyptic number.

2021312222 is a deficient number, since it is larger than the sum of its proper divisors (1031325058).

2021312222 is a wasteful number, since it uses less digits than its factorization.

2021312222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5155.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 2021312222 is about 44959.0060165925. The cubic root of 2021312222 is about 1264.3805331433.

Adding to 2021312222 its reverse (2222131202), we get a palindrome (4243443424).

The spelling of 2021312222 in words is "two billion, twenty-one million, three hundred twelve thousand, two hundred twenty-two".