1221110001196 has 12 divisors (see below), whose sum is σ = 2141577955440. Its totient is φ = 609230585360.

The previous prime is 1221110001193. The next prime is 1221110001197. The reversal of 1221110001196 is 6911000111221.

It is a super-2 number, since 2×1221110001196² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1221110001196.

It is not an unprimeable number, because it can be changed into a prime (1221110001193) 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 3 ways as a sum of consecutive naturals, for example, 331101736 + ... + 331105423.

It is an arithmetic number, because the mean of its divisors is an integer number (178464829620).

Almost surely, 2^{1221110001196} is an apocalyptic number.

It is an amenable number.

1221110001196 is a deficient number, since it is larger than the sum of its proper divisors (920467954244).

1221110001196 is a wasteful number, since it uses less digits than its factorization.

1221110001196 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662207624 (or 662207622 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 25.

The spelling of 1221110001196 in words is "one trillion, two hundred twenty-one billion, one hundred ten million, one thousand, one hundred ninety-six".