1220111102012 has 24 divisors (see below), whose sum is σ = 2332455041280. Its totient is φ = 553845472560.

The previous prime is 1220111102011. The next prime is 1220111102051. The reversal of 1220111102012 is 2102011110221.

It is a super-2 number, since 2×1220111102012² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220111102011) 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, 18729188 + ... + 18794219.

It is an arithmetic number, because the mean of its divisors is an integer number (97185626720).

Almost surely, 2^{1220111102012} is an apocalyptic number.

It is an amenable number.

1220111102012 is a deficient number, since it is larger than the sum of its proper divisors (1112343939268).

1220111102012 is a wasteful number, since it uses less digits than its factorization.

1220111102012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37524161 (or 37524159 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1220111102012 its reverse (2102011110221), we get a palindrome (3322122212233).

The spelling of 1220111102012 in words is "one trillion, two hundred twenty billion, one hundred eleven million, one hundred two thousand, twelve".