121111221101110 has 32 divisors (see below), whose sum is σ = 218598199633440. Its totient is φ = 48311625858048.

The previous prime is 121111221101071. The next prime is 121111221101113. The reversal of 121111221101110 is 11101122111121.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121111221101113) 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, 34771174 + ... + 38095366.

It is an arithmetic number, because the mean of its divisors is an integer number (6831193738545).

Almost surely, 2^{121111221101110} is an apocalyptic number.

121111221101110 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121111221101110 is a deficient number, since it is larger than the sum of its proper divisors (97486978532330).

121111221101110 is a wasteful number, since it uses less digits than its factorization.

121111221101110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3334192.

The product of its (nonzero) digits is 8, while the sum is 16.

Adding to 121111221101110 its reverse (11101122111121), we get a palindrome (132212343212231).

The spelling of 121111221101110 in words is "one hundred twenty-one trillion, one hundred eleven billion, two hundred twenty-one million, one hundred one thousand, one hundred ten".