121201011110111 has 8 divisors (see below), whose sum is σ = 121409092428624. Its totient is φ = 120992935255360.

The previous prime is 121201011110071. The next prime is 121201011110143. The reversal of 121201011110111 is 111011110102121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121201011110111 is a prime.

It is a super-2 number, since 2×121201011110111² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121201011110161) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44349491 + ... + 47002971.

It is an arithmetic number, because the mean of its divisors is an integer number (15176136553578).

Almost surely, 2^{121201011110111} is an apocalyptic number.

121201011110111 is a deficient number, since it is larger than the sum of its proper divisors (208081318513).

121201011110111 is an equidigital number, since it uses as much as digits as its factorization.

121201011110111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2731881.

The product of its (nonzero) digits is 4, while the sum is 14.

Adding to 121201011110111 its reverse (111011110102121), we get a palindrome (232212121212232).

The spelling of 121201011110111 in words is "one hundred twenty-one trillion, two hundred one billion, eleven million, one hundred ten thousand, one hundred eleven".