12121111101122 has 4 divisors (see below), whose sum is σ = 18181666651686. Its totient is φ = 6060555550560.

The previous prime is 12121111101097. The next prime is 12121111101149. The reversal of 12121111101122 is 22110111112121.

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

It can be written as a sum of positive squares in only one way, i.e., 7399047374161 + 4722063726961 = 2720119^2 + 2173031^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 12121111101122.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3030277775279 + ... + 3030277775282.

Almost surely, 2^{12121111101122} is an apocalyptic number.

12121111101122 is a deficient number, since it is larger than the sum of its proper divisors (6060555550564).

12121111101122 is an equidigital number, since it uses as much as digits as its factorization.

12121111101122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6060555550563.

The product of its (nonzero) digits is 16, while the sum is 17.

Adding to 12121111101122 its reverse (22110111112121), we get a palindrome (34231222213243).

The spelling of 12121111101122 in words is "twelve trillion, one hundred twenty-one billion, one hundred eleven million, one hundred one thousand, one hundred twenty-two".