1311121210102 has 16 divisors (see below), whose sum is σ = 2145622597632. Its totient is φ = 595922095720.

The previous prime is 1311121210099. The next prime is 1311121210109. The reversal of 1311121210102 is 2010121211131.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1311121210109) 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, 1784878 + ... + 2409985.

It is an arithmetic number, because the mean of its divisors is an integer number (134101412352).

Almost surely, 2^{1311121210102} is an apocalyptic number.

1311121210102 is a deficient number, since it is larger than the sum of its proper divisors (834501387530).

1311121210102 is a wasteful number, since it uses less digits than its factorization.

1311121210102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4209083.

The product of its (nonzero) digits is 24, while the sum is 16.

Adding to 1311121210102 its reverse (2010121211131), we get a palindrome (3321242421233).

The spelling of 1311121210102 in words is "one trillion, three hundred eleven billion, one hundred twenty-one million, two hundred ten thousand, one hundred two".