1220111110222 has 16 divisors (see below), whose sum is σ = 1869054426000. Its totient is φ = 597228702400.

The previous prime is 1220111110201. The next prime is 1220111110223. The reversal of 1220111110222 is 2220111110221.

It is a super-2 number, since 2×1220111110222² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1220111110196 and 1220111110205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220111110223) 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, 33915472 + ... + 33951427.

It is an arithmetic number, because the mean of its divisors is an integer number (116815901625).

Almost surely, 2^{1220111110222} is an apocalyptic number.

1220111110222 is a deficient number, since it is larger than the sum of its proper divisors (648943315778).

1220111110222 is a wasteful number, since it uses less digits than its factorization.

1220111110222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67867091.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1220111110222 its reverse (2220111110221), we get a palindrome (3440222220443).

Subtracting 1220111110222 from its reverse (2220111110221), we obtain a palindrome (999999999999).

The spelling of 1220111110222 in words is "one trillion, two hundred twenty billion, one hundred eleven million, one hundred ten thousand, two hundred twenty-two".