121122110122111 has 16 divisors (see below), whose sum is σ = 147467121364224. Its totient is φ = 97112494525824.

The previous prime is 121122110122073. The next prime is 121122110122127. The reversal of 121122110122111 is 111221011221121.

It is a cyclic number.

It is not a de Polignac number, because 121122110122111 - 2²⁹ = 121121573251199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121122110122171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3122167285 + ... + 3122206078.

It is an arithmetic number, because the mean of its divisors is an integer number (9216695085264).

Almost surely, 2^{121122110122111} is an apocalyptic number.

121122110122111 is a deficient number, since it is larger than the sum of its proper divisors (26345011242113).

121122110122111 is a wasteful number, since it uses less digits than its factorization.

121122110122111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6244373550.

The product of its (nonzero) digits is 32, while the sum is 19.

Adding to 121122110122111 its reverse (111221011221121), we get a palindrome (232343121343232).

The spelling of 121122110122111 in words is "one hundred twenty-one trillion, one hundred twenty-two billion, one hundred ten million, one hundred twenty-two thousand, one hundred eleven".