121111107 has 8 divisors (see below), whose sum is σ = 173903184. Its totient is φ = 74529888.

The previous prime is 121111103. The next prime is 121111121. The reversal of 121111107 is 701111121.

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

It is not a de Polignac number, because 121111107 - 2² = 121111103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121111103) 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, 1552668 + ... + 1552745.

It is an arithmetic number, because the mean of its divisors is an integer number (21737898).

Almost surely, 2^121111107 is an apocalyptic number.

121111107 is a deficient number, since it is larger than the sum of its proper divisors (52792077).

121111107 is a wasteful number, since it uses less digits than its factorization.

121111107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3105429.

The product of its (nonzero) digits is 14, while the sum is 15.

The square root of 121111107 is about 11005.0491593632. The cubic root of 121111107 is about 494.7600878011.

Adding to 121111107 its product of nonzero digits (14), we get a palindrome (121111121).

Adding to 121111107 its reverse (701111121), we get a palindrome (822222228).

The spelling of 121111107 in words is "one hundred twenty-one million, one hundred eleven thousand, one hundred seven".