1222120020012 has 96 divisors (see below), whose sum is σ = 3076994027520. Its totient is φ = 376427504640.

The previous prime is 1222120019987. The next prime is 1222120020041. The reversal of 1222120020012 is 2100200212221.

It is a junction number, because it is equal to n+sod(n) for n = 1222120019973 and 1222120020000.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4742848 + ... + 4993880.

It is an arithmetic number, because the mean of its divisors is an integer number (32052021120).

Almost surely, 2^{1222120020012} is an apocalyptic number.

1222120020012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1222120020012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1538497013760).

1222120020012 is an abundant number, since it is smaller than the sum of its proper divisors (1854874007508).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1222120020012 is a wasteful number, since it uses less digits than its factorization.

1222120020012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251663 (or 251661 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 1222120020012 its reverse (2100200212221), we get a palindrome (3322320232233).

The spelling of 1222120020012 in words is "one trillion, two hundred twenty-two billion, one hundred twenty million, twenty thousand, twelve".