1211224203222 has 48 divisors (see below), whose sum is σ = 2668841318640. Its totient is φ = 366189880320.

The previous prime is 1211224203193. The next prime is 1211224203227. The reversal of 1211224203222 is 2223024221121.

It is a junction number, because it is equal to n+sod(n) for n = 1211224203192 and 1211224203201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211224203227) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1612147 + ... + 2240862.

It is an arithmetic number, because the mean of its divisors is an integer number (55600860805).

Almost surely, 2^{1211224203222} is an apocalyptic number.

1211224203222 is an abundant number, since it is smaller than the sum of its proper divisors (1457617115418).

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

1211224203222 is a wasteful number, since it uses less digits than its factorization.

1211224203222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3853469 (or 3853458 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 1211224203222 its reverse (2223024221121), we get a palindrome (3434248424343).

The spelling of 1211224203222 in words is "one trillion, two hundred eleven billion, two hundred twenty-four million, two hundred three thousand, two hundred twenty-two".