1121210111222 has 16 divisors (see below), whose sum is σ = 1699199685792. Its totient is φ = 554810530560.

The previous prime is 1121210111221. The next prime is 1121210111237. The reversal of 1121210111222 is 2221110121211.

It is a super-2 number, since 2×1121210111222² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1121210111222.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121210111221) 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, 11325128 + ... + 11423700.

It is an arithmetic number, because the mean of its divisors is an integer number (106199980362).

Almost surely, 2^{1121210111222} is an apocalyptic number.

1121210111222 is a deficient number, since it is larger than the sum of its proper divisors (577989574570).

1121210111222 is an equidigital number, since it uses as much as digits as its factorization.

1121210111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157303.

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 1121210111222 its reverse (2221110121211), we get a palindrome (3342320232433).

The spelling of 1121210111222 in words is "one trillion, one hundred twenty-one billion, two hundred ten million, one hundred eleven thousand, two hundred twenty-two".