121121122210111 has 8 divisors (see below), whose sum is σ = 121136504401584. Its totient is φ = 121105740803520.

The previous prime is 121121122210093. The next prime is 121121122210157. The reversal of 121121122210111 is 111012221121121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121121122210111 - 2⁹ = 121121122209599 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 (121121122213111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 346468996 + ... + 346818406.

It is an arithmetic number, because the mean of its divisors is an integer number (15142063050198).

Almost surely, 2^{121121122210111} is an apocalyptic number.

121121122210111 is a deficient number, since it is larger than the sum of its proper divisors (15382191473).

121121122210111 is a wasteful number, since it uses less digits than its factorization.

121121122210111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392441.

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

Adding to 121121122210111 its reverse (111012221121121), we get a palindrome (232133343331232).

The spelling of 121121122210111 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, one hundred twenty-two million, two hundred ten thousand, one hundred eleven".