121110101111011 has 4 divisors (see below), whose sum is σ = 121130043501592. Its totient is φ = 121090158720432.

The previous prime is 121110101110991. The next prime is 121110101111017. The reversal of 121110101111011 is 110111101011121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121110101111011 - 2¹¹ = 121110101108963 is a prime.

It is a super-2 number, since 2×121110101111011² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121110101110982 and 121110101111000.

It is not an unprimeable number, because it can be changed into a prime (121110101111017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9971186181 + ... + 9971198326.

It is an arithmetic number, because the mean of its divisors is an integer number (30282510875398).

Almost surely, 2^{121110101111011} is an apocalyptic number.

121110101111011 is a deficient number, since it is larger than the sum of its proper divisors (19942390581).

121110101111011 is an equidigital number, since it uses as much as digits as its factorization.

121110101111011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19942390580.

The product of its (nonzero) digits is 2, while the sum is 13.

Adding to 121110101111011 its reverse (110111101011121), we get a palindrome (231221202122132).

It can be divided in two parts, 1211101011110 and 11, that added together give a palindrome (1211101011121).

The spelling of 121110101111011 in words is "one hundred twenty-one trillion, one hundred ten billion, one hundred one million, one hundred eleven thousand, eleven".