121001122201111 has 8 divisors (see below), whose sum is σ = 122364128280240. Its totient is φ = 119638192631232.

The previous prime is 121001122201051. The next prime is 121001122201121. The reversal of 121001122201111 is 111102221100121.

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

It is a cyclic number.

It is not a de Polignac number, because 121001122201111 - 2¹⁵ = 121001122168343 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001122201121) 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, 15943485 + ... + 22275478.

It is an arithmetic number, because the mean of its divisors is an integer number (15295516035030).

Almost surely, 2^{121001122201111} is an apocalyptic number.

121001122201111 is a deficient number, since it is larger than the sum of its proper divisors (1363006079129).

121001122201111 is an equidigital number, since it uses as much as digits as its factorization.

121001122201111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38254625.

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

Adding to 121001122201111 its reverse (111102221100121), we get a palindrome (232103343301232).

The spelling of 121001122201111 in words is "one hundred twenty-one trillion, one billion, one hundred twenty-two million, two hundred one thousand, one hundred eleven".