1212211111102 has 4 divisors (see below), whose sum is σ = 1818316666656. Its totient is φ = 606105555550.

The previous prime is 1212211111087. The next prime is 1212211111129. The reversal of 1212211111102 is 2011111122121.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 303052777774 + ... + 303052777777.

It is an arithmetic number, because the mean of its divisors is an integer number (454579166664).

Almost surely, 2^{1212211111102} is an apocalyptic number.

1212211111102 is a deficient number, since it is larger than the sum of its proper divisors (606105555554).

1212211111102 is an equidigital number, since it uses as much as digits as its factorization.

1212211111102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 606105555553.

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

Adding to 1212211111102 its reverse (2011111122121), we get a palindrome (3223322233223).

The spelling of 1212211111102 in words is "one trillion, two hundred twelve billion, two hundred eleven million, one hundred eleven thousand, one hundred two".