121121223043111 has 8 divisors (see below), whose sum is σ = 122831343158544. Its totient is φ = 119412479286720.

The previous prime is 121121223043097. The next prime is 121121223043129. The reversal of 121121223043111 is 111340322121121.

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 121121223043111 - 2¹⁵ = 121121223010343 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 (121121223043141) 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, 343912516 + ... + 344264521.

It is an arithmetic number, because the mean of its divisors is an integer number (15353917894818).

Almost surely, 2^{121121223043111} is an apocalyptic number.

121121223043111 is a deficient number, since it is larger than the sum of its proper divisors (1710120115433).

121121223043111 is an equidigital number, since it uses as much as digits as its factorization.

121121223043111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 688179521.

The product of its (nonzero) digits is 576, while the sum is 25.

Adding to 121121223043111 its reverse (111340322121121), we get a palindrome (232461545164232).

The spelling of 121121223043111 in words is "one hundred twenty-one trillion, one hundred twenty-one billion, two hundred twenty-three million, forty-three thousand, one hundred eleven".