121320212102 has 4 divisors (see below), whose sum is σ = 181980318156. Its totient is φ = 60660106050.

The previous prime is 121320212033. The next prime is 121320212129. The reversal of 121320212102 is 201212023121.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 201212023121 = 761 ⋅264404761.

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, 30330053024 + ... + 30330053027.

It is an arithmetic number, because the mean of its divisors is an integer number (45495079539).

Almost surely, 2^121320212102 is an apocalyptic number.

121320212102 is a deficient number, since it is larger than the sum of its proper divisors (60660106054).

121320212102 is an equidigital number, since it uses as much as digits as its factorization.

121320212102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60660106053.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 121320212102 its reverse (201212023121), we get a palindrome (322532235223).

The spelling of 121320212102 in words is "one hundred twenty-one billion, three hundred twenty million, two hundred twelve thousand, one hundred two".