11211221021222 has 16 divisors (see below), whose sum is σ = 17396935399440. Its totient is φ = 5412247290912.

The previous prime is 11211221021219. The next prime is 11211221021281. The reversal of 11211221021222 is 22212012211211.

It is a junction number, because it is equal to n+sod(n) for n = 11211221021194 and 11211221021203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3768173 + ... + 6051575.

It is an arithmetic number, because the mean of its divisors is an integer number (1087308462465).

Almost surely, 2^{11211221021222} is an apocalyptic number.

11211221021222 is a deficient number, since it is larger than the sum of its proper divisors (6185714378218).

11211221021222 is a wasteful number, since it uses less digits than its factorization.

11211221021222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2368087.

The product of its (nonzero) digits is 128, while the sum is 20.

Adding to 11211221021222 its reverse (22212012211211), we get a palindrome (33423233232433).

The spelling of 11211221021222 in words is "eleven trillion, two hundred eleven billion, two hundred twenty-one million, twenty-one thousand, two hundred twenty-two".