1212120111102 has 32 divisors (see below), whose sum is σ = 2568609483552. Its totient is φ = 380011213824.

The previous prime is 1212120111089. The next prime is 1212120111107. The reversal of 1212120111102 is 2011110212121.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212120111107) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3941103 + ... + 4237514.

It is an arithmetic number, because the mean of its divisors is an integer number (80269046361).

Almost surely, 2^{1212120111102} is an apocalyptic number.

1212120111102 is an abundant number, since it is smaller than the sum of its proper divisors (1356489372450).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212120111102 is a wasteful number, since it uses less digits than its factorization.

1212120111102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8180092.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1212120111102 its reverse (2011110212121), we get a palindrome (3223230323223).

It can be divided in two parts, 12121 and 20111102, that multiplied together give a palindrome (243766667342).

The spelling of 1212120111102 in words is "one trillion, two hundred twelve billion, one hundred twenty million, one hundred eleven thousand, one hundred two".