20212221311222 has 16 divisors (see below), whose sum is σ = 30329715068640. Its totient is φ = 10102316949312.

The previous prime is 20212221311221. The next prime is 20212221311239. The reversal of 20212221311222 is 22211312221202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212221311221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63265679 + ... + 63584357.

It is an arithmetic number, because the mean of its divisors is an integer number (1895607191790).

Almost surely, 2^{20212221311222} is an apocalyptic number.

20212221311222 is a deficient number, since it is larger than the sum of its proper divisors (10117493757418).

20212221311222 is a wasteful number, since it uses less digits than its factorization.

20212221311222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330487.

The product of its (nonzero) digits is 768, while the sum is 23.

Adding to 20212221311222 its reverse (22211312221202), we get a palindrome (42423533532424).

The spelling of 20212221311222 in words is "twenty trillion, two hundred twelve billion, two hundred twenty-one million, three hundred eleven thousand, two hundred twenty-two".