1220111211022 has 16 divisors (see below), whose sum is σ = 2060950316544. Its totient is φ = 536705811000.

The previous prime is 1220111210999. The next prime is 1220111211023. The reversal of 1220111211022 is 2201121110221.

It is a junction number, because it is equal to n+sod(n) for n = 1220111210987 and 1220111211005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220111211023) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 894509004 + ... + 894510367.

It is an arithmetic number, because the mean of its divisors is an integer number (128809394784).

Almost surely, 2^{1220111211022} is an apocalyptic number.

1220111211022 is a deficient number, since it is larger than the sum of its proper divisors (840839105522).

1220111211022 is a wasteful number, since it uses less digits than its factorization.

1220111211022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1789019415.

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

Adding to 1220111211022 its reverse (2201121110221), we get a palindrome (3421232321243).

The spelling of 1220111211022 in words is "one trillion, two hundred twenty billion, one hundred eleven million, two hundred eleven thousand, twenty-two".