1220111112212 has 12 divisors (see below), whose sum is σ = 2135374153920. Its totient is φ = 610004211096.

The previous prime is 1220111112211. The next prime is 1220111112239. The reversal of 1220111112212 is 2122111110221.

It is a super-2 number, since 2×1220111112212² (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 (1220111112211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12782762 + ... + 12877857.

It is an arithmetic number, because the mean of its divisors is an integer number (177947846160).

Almost surely, 2^{1220111112212} is an apocalyptic number.

It is an amenable number.

1220111112212 is a deficient number, since it is larger than the sum of its proper divisors (915263041708).

1220111112212 is a wasteful number, since it uses less digits than its factorization.

1220111112212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25672510 (or 25672508 counting only the distinct ones).

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

Adding to 1220111112212 its reverse (2122111110221), we get a palindrome (3342222222433).

The spelling of 1220111112212 in words is "one trillion, two hundred twenty billion, one hundred eleven million, one hundred twelve thousand, two hundred twelve".