1121212111102 has 4 divisors (see below), whose sum is σ = 1681818166656. Its totient is φ = 560606055550.

The previous prime is 1121212111093. The next prime is 1121212111109. The reversal of 1121212111102 is 2011112121211.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121212111109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 280303027774 + ... + 280303027777.

It is an arithmetic number, because the mean of its divisors is an integer number (420454541664).

Almost surely, 2^{1121212111102} is an apocalyptic number.

1121212111102 is a deficient number, since it is larger than the sum of its proper divisors (560606055554).

1121212111102 is an equidigital number, since it uses as much as digits as its factorization.

1121212111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560606055553.

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

Adding to 1121212111102 its reverse (2011112121211), we get a palindrome (3132324232313).

The spelling of 1121212111102 in words is "one trillion, one hundred twenty-one billion, two hundred twelve million, one hundred eleven thousand, one hundred two".