201211222212222 has 16 divisors (see below), whose sum is σ = 416299080439440. Its totient is φ = 64757634734912.

The previous prime is 201211222212167. The next prime is 201211222212223. The reversal of 201211222212222 is 222212222112102.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 201211222212192 and 201211222212201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201211222212223) 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, 578193167103 + ... + 578193167450.

It is an arithmetic number, because the mean of its divisors is an integer number (26018692527465).

Almost surely, 2^{201211222212222} is an apocalyptic number.

201211222212222 is an abundant number, since it is smaller than the sum of its proper divisors (215087858227218).

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

201211222212222 is a wasteful number, since it uses less digits than its factorization.

201211222212222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1156386334587.

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 201211222212222 its reverse (222212222112102), we get a palindrome (423423444324324).

The spelling of 201211222212222 in words is "two hundred one trillion, two hundred eleven billion, two hundred twenty-two million, two hundred twelve thousand, two hundred twenty-two".