12121211011102 has 4 divisors (see below), whose sum is σ = 18181816516656. Its totient is φ = 6060605505550.

The previous prime is 12121211011051. The next prime is 12121211011103. The reversal of 12121211011102 is 20111011212121.

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 (12121211011103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3030302752774 + ... + 3030302752777.

It is an arithmetic number, because the mean of its divisors is an integer number (4545454129164).

Almost surely, 2^{12121211011102} is an apocalyptic number.

12121211011102 is a deficient number, since it is larger than the sum of its proper divisors (6060605505554).

12121211011102 is an equidigital number, since it uses as much as digits as its factorization.

12121211011102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060605505553.

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

Adding to 12121211011102 its reverse (20111011212121), we get a palindrome (32232222223223).

The spelling of 12121211011102 in words is "twelve trillion, one hundred twenty-one billion, two hundred eleven million, eleven thousand, one hundred two".