1211021219982 has 16 divisors (see below), whose sum is σ = 2768048502912. Its totient is φ = 346006062840.

The previous prime is 1211021219963. The next prime is 1211021219999. The reversal of 1211021219982 is 2899121201121.

It is a self number, because there is not a number n which added to its sum of digits gives 1211021219982.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14416919244 + ... + 14416919327.

It is an arithmetic number, because the mean of its divisors is an integer number (173003031432).

Almost surely, 2^{1211021219982} is an apocalyptic number.

1211021219982 is an abundant number, since it is smaller than the sum of its proper divisors (1557027282930).

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

1211021219982 is a wasteful number, since it uses less digits than its factorization.

1211021219982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28833838583.

The product of its (nonzero) digits is 10368, while the sum is 39.

The spelling of 1211021219982 in words is "one trillion, two hundred eleven billion, twenty-one million, two hundred nineteen thousand, nine hundred eighty-two".