1201111121002 has 16 divisors (see below), whose sum is σ = 1981538479872. Its totient is φ = 542564106480.

The previous prime is 1201111120999. The next prime is 1201111121009. The reversal of 1201111121002 is 2001211111021.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (1201111121009) 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, 491451774 + ... + 491454217.

It is an arithmetic number, because the mean of its divisors is an integer number (123846154992).

Almost surely, 2^{1201111121002} is an apocalyptic number.

1201111121002 is a deficient number, since it is larger than the sum of its proper divisors (780427358870).

1201111121002 is a wasteful number, since it uses less digits than its factorization.

1201111121002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982906053.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 1201111121002 its reverse (2001211111021), we get a palindrome (3202322232023).

The spelling of 1201111121002 in words is "one trillion, two hundred one billion, one hundred eleven million, one hundred twenty-one thousand, two".