1202221999966 has 16 divisors (see below), whose sum is σ = 1987214899824. Its totient is φ = 541967698944.

The previous prime is 1202221999963. The next prime is 1202221999987. The reversal of 1202221999966 is 6699991222021.

It is a self number, because there is not a number n which added to its sum of digits gives 1202221999966.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1202221999963) by changing a digit.

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, 537665251 + ... + 537667486.

It is an arithmetic number, because the mean of its divisors is an integer number (124200931239).

Almost surely, 2^{1202221999966} is an apocalyptic number.

1202221999966 is a deficient number, since it is larger than the sum of its proper divisors (784992899858).

1202221999966 is a wasteful number, since it uses less digits than its factorization.

1202221999966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075332795.

The product of its (nonzero) digits is 3779136, while the sum is 58.

The spelling of 1202221999966 in words is "one trillion, two hundred two billion, two hundred twenty-one million, nine hundred ninety-nine thousand, nine hundred sixty-six".