2211221200222 has 4 divisors (see below), whose sum is σ = 3316831800336. Its totient is φ = 1105610600110.

The previous prime is 2211221200207. The next prime is 2211221200259. The reversal of 2211221200222 is 2220021221122.

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

It is a super-2 number, since 2×2211221200222² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2211221200222.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 552805300054 + ... + 552805300057.

It is an arithmetic number, because the mean of its divisors is an integer number (829207950084).

Almost surely, 2^{2211221200222} is an apocalyptic number.

2211221200222 is a deficient number, since it is larger than the sum of its proper divisors (1105610600114).

2211221200222 is a wasteful number, since it uses less digits than its factorization.

2211221200222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1105610600113.

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

Adding to 2211221200222 its reverse (2220021221122), we get a palindrome (4431242421344).

The spelling of 2211221200222 in words is "two trillion, two hundred eleven billion, two hundred twenty-one million, two hundred thousand, two hundred twenty-two".