2221212120222 has 32 divisors (see below), whose sum is σ = 4562591723424. Its totient is φ = 720377020800.

The previous prime is 2221212120221. The next prime is 2221212120271. The reversal of 2221212120222 is 2220212121222.

It is a super-2 number, since 2×2221212120222² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2221212120221) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 13652272 + ... + 13814012.

It is an arithmetic number, because the mean of its divisors is an integer number (142580991357).

Almost surely, 2^{2221212120222} is an apocalyptic number.

2221212120222 is an abundant number, since it is smaller than the sum of its proper divisors (2341379603202).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2221212120222 is a wasteful number, since it uses less digits than its factorization.

2221212120222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 223644.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 2221212120222 its reverse (2220212121222), we get a palindrome (4441424241444).

The spelling of 2221212120222 in words is "two trillion, two hundred twenty-one billion, two hundred twelve million, one hundred twenty thousand, two hundred twenty-two".