1121221020012 has 12 divisors (see below), whose sum is σ = 2616182380056. Its totient is φ = 373740340000.

The previous prime is 1121221019923. The next prime is 1121221020047. The reversal of 1121221020012 is 2100201221211.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 1121221019973 and 1121221020000.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46717542489 + ... + 46717542512.

It is an arithmetic number, because the mean of its divisors is an integer number (218015198338).

Almost surely, 2^{1121221020012} is an apocalyptic number.

1121221020012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1121221020012 is an abundant number, since it is smaller than the sum of its proper divisors (1494961360044).

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

1121221020012 is a wasteful number, since it uses less digits than its factorization.

1121221020012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93435085008 (or 93435085006 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1121221020012 its reverse (2100201221211), we get a palindrome (3221422241223).

The spelling of 1121221020012 in words is "one trillion, one hundred twenty-one billion, two hundred twenty-one million, twenty thousand, twelve".