121142134221225 has 24 divisors (see below), whose sum is σ = 215695123086912. Its totient is φ = 59639204539200.

The previous prime is 121142134221209. The next prime is 121142134221271. The reversal of 121142134221225 is 522122431241121.

It is not a de Polignac number, because 121142134221225 - 2⁴ = 121142134221209 is a prime.

It is a super-3 number, since 3×121142134221225³ (a number of 43 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 62124170421 + ... + 62124172370.

It is an arithmetic number, because the mean of its divisors is an integer number (8987296795288).

Almost surely, 2^{121142134221225} is an apocalyptic number.

121142134221225 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121142134221225 is a deficient number, since it is larger than the sum of its proper divisors (94552988865687).

121142134221225 is a wasteful number, since it uses less digits than its factorization.

121142134221225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124248342817 (or 124248342812 counting only the distinct ones).

The product of its digits is 15360, while the sum is 33.

Adding to 121142134221225 its reverse (522122431241121), we get a palindrome (643264565462346).

The spelling of 121142134221225 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-five".