1221035142112 has 24 divisors (see below), whose sum is σ = 2407966789536. Its totient is φ = 609488020992.

The previous prime is 1221035142109. The next prime is 1221035142133. The reversal of 1221035142112 is 2112415301221.

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, 32154168 + ... + 32192119.

It is an arithmetic number, because the mean of its divisors is an integer number (100331949564).

Almost surely, 2^{1221035142112} is an apocalyptic number.

It is an amenable number.

1221035142112 is a deficient number, since it is larger than the sum of its proper divisors (1186931647424).

1221035142112 is an equidigital number, since it uses as much as digits as its factorization.

1221035142112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64346890 (or 64346882 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 25.

The spelling of 1221035142112 in words is "one trillion, two hundred twenty-one billion, thirty-five million, one hundred forty-two thousand, one hundred twelve".