1222120021012 has 24 divisors (see below), whose sum is σ = 2335768666560. Its totient is φ = 554882804160.

The previous prime is 1222120021007. The next prime is 1222120021121. The reversal of 1222120021012 is 2101200212221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15617937 + ... + 15695992.

It is an arithmetic number, because the mean of its divisors is an integer number (97323694440).

Almost surely, 2^{1222120021012} is an apocalyptic number.

It is an amenable number.

1222120021012 is a deficient number, since it is larger than the sum of its proper divisors (1113648645548).

1222120021012 is a wasteful number, since it uses less digits than its factorization.

1222120021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31314831 (or 31314829 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 1222120021012 its reverse (2101200212221), we get a palindrome (3323320233233).

The spelling of 1222120021012 in words is "one trillion, two hundred twenty-two billion, one hundred twenty million, twenty-one thousand, twelve".