1221201113002 has 32 divisors (see below), whose sum is σ = 2024390672640. Its totient is φ = 549018250560.

The previous prime is 1221201112993. The next prime is 1221201113009. The reversal of 1221201113002 is 2003111021221.

It is not an unprimeable number, because it can be changed into a prime (1221201113009) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 2996274 + ... + 3379357.

It is an arithmetic number, because the mean of its divisors is an integer number (63262208520).

Almost surely, 2^{1221201113002} is an apocalyptic number.

1221201113002 is a deficient number, since it is larger than the sum of its proper divisors (803189559638).

1221201113002 is a wasteful number, since it uses less digits than its factorization.

1221201113002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6375838.

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1221201113002 its reverse (2003111021221), we get a palindrome (3224312134223).

The spelling of 1221201113002 in words is "one trillion, two hundred twenty-one billion, two hundred one million, one hundred thirteen thousand, two".