121142134221223 has 16 divisors (see below), whose sum is σ = 127708372915200. Its totient is φ = 114595022298240.

The previous prime is 121142134221209. The next prime is 121142134221271. The reversal of 121142134221223 is 322122431241121.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 121142134221223 - 2¹⁷ = 121142134090151 is a prime.

It is a super-3 number, since 3×121142134221223³ (a number of 43 digits) contains 333 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 (121142134221203) 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, 45628458 + ... + 48210376.

It is an arithmetic number, because the mean of its divisors is an integer number (7981773307200).

Almost surely, 2^{121142134221223} is an apocalyptic number.

121142134221223 is a deficient number, since it is larger than the sum of its proper divisors (6566238693977).

121142134221223 is a wasteful number, since it uses less digits than its factorization.

121142134221223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2585622.

The product of its digits is 9216, while the sum is 31.

Adding to 121142134221223 its reverse (322122431241121), we get a palindrome (443264565462344).

The spelling of 121142134221223 in words is "one hundred twenty-one trillion, one hundred forty-two billion, one hundred thirty-four million, two hundred twenty-one thousand, two hundred twenty-three".