1121201211222 has 32 divisors (see below), whose sum is σ = 2522318235360. Its totient is φ = 373733735616.

The previous prime is 1121201211161. The next prime is 1121201211241. The reversal of 1121201211222 is 2221121021211.

1121201211222 is a `hidden beast` number, since 11 + 21 + 201 + 211 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1121201211195 and 1121201211204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 128162203 + ... + 128170950.

It is an arithmetic number, because the mean of its divisors is an integer number (78822444855).

Almost surely, 2^{1121201211222} is an apocalyptic number.

1121201211222 is an abundant number, since it is smaller than the sum of its proper divisors (1401117024138).

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

1121201211222 is an frugal number, since it uses more digits than its factorization.

1121201211222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256333176 (or 256333158 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 1121201211222 its reverse (2221121021211), we get a palindrome (3342322232433).

The spelling of 1121201211222 in words is "one trillion, one hundred twenty-one billion, two hundred one million, two hundred eleven thousand, two hundred twenty-two".