1220111220212 has 12 divisors (see below), whose sum is σ = 2180624308800. Its totient is φ = 597075703416.

The previous prime is 1220111220203. The next prime is 1220111220311. The reversal of 1220111220212 is 2120221110221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3244976462 + ... + 3244976837.

It is an arithmetic number, because the mean of its divisors is an integer number (181718692400).

Almost surely, 2^{1220111220212} is an apocalyptic number.

It is an amenable number.

1220111220212 is a deficient number, since it is larger than the sum of its proper divisors (960513088588).

1220111220212 is a wasteful number, since it uses less digits than its factorization.

1220111220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6489953350 (or 6489953348 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 1220111220212 its reverse (2120221110221), we get a palindrome (3340332330433).

The spelling of 1220111220212 in words is "one trillion, two hundred twenty billion, one hundred eleven million, two hundred twenty thousand, two hundred twelve".