121111112110 has 8 divisors (see below), whose sum is σ = 218000001816. Its totient is φ = 48444444840.

The previous prime is 121111112107. The next prime is 121111112123. The reversal of 121111112110 is 11211111121.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6055555596 + ... + 6055555615.

It is an arithmetic number, because the mean of its divisors is an integer number (27250000227).

Almost surely, 2^121111112110 is an apocalyptic number.

121111112110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121111112110 is a deficient number, since it is larger than the sum of its proper divisors (96888889706).

121111112110 is a wasteful number, since it uses less digits than its factorization.

121111112110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12111111218.

The product of its (nonzero) digits is 4, while the sum is 13.

Adding to 121111112110 its reverse (11211111121), we get a palindrome (132322223231).

It can be divided in two parts, 1211111 and 12110, that added together give a palindrome (1223221).

The spelling of 121111112110 in words is "one hundred twenty-one billion, one hundred eleven million, one hundred twelve thousand, one hundred ten".