121011222101111 has 12 divisors (see below), whose sum is σ = 126613382122080. Its totient is φ = 115647339809760.

The previous prime is 121011222101101. The next prime is 121011222101113. The reversal of 121011222101111 is 111101222110121.

It is not a de Polignac number, because 121011222101111 - 2⁶ = 121011222101047 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 121011222101111.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121011222101113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100711295 + ... + 101905776.

It is an arithmetic number, because the mean of its divisors is an integer number (10551115176840).

Almost surely, 2^{121011222101111} is an apocalyptic number.

121011222101111 is a deficient number, since it is larger than the sum of its proper divisors (5602160020969).

121011222101111 is a wasteful number, since it uses less digits than its factorization.

121011222101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202618246 (or 202618223 counting only the distinct ones).

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

Adding to 121011222101111 its reverse (111101222110121), we get a palindrome (232112444211232).

The spelling of 121011222101111 in words is "one hundred twenty-one trillion, eleven billion, two hundred twenty-two million, one hundred one thousand, one hundred eleven".