121142134221224 has 8 divisors (see below), whose sum is σ = 227141501664810. Its totient is φ = 60571067110608.

The previous prime is 121142134221209. The next prime is 121142134221271. The reversal of 121142134221224 is 422122431241121.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 105431454352324 + 15710679868900 = 10267982^2 + 3963670^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-3 number, since 3×121142134221224³ (a number of 43 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7571383388819 + ... + 7571383388834.

Almost surely, 2^{121142134221224} is an apocalyptic number.

It is an amenable number.

121142134221224 is a deficient number, since it is larger than the sum of its proper divisors (105999367443586).

121142134221224 is a wasteful number, since it uses less digits than its factorization.

121142134221224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15142766777659 (or 15142766777655 counting only the distinct ones).

The product of its digits is 12288, while the sum is 32.

Adding to 121142134221224 its reverse (422122431241121), we get a palindrome (543264565462345).

The spelling of 121142134221224 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-four".