121142113221 has 16 divisors (see below), whose sum is σ = 170978448960. Its totient is φ = 76163122560.

The previous prime is 121142113207. The next prime is 121142113241. The reversal of 121142113221 is 122311241121.

It is not a de Polignac number, because 121142113221 - 2¹⁷ = 121141982149 is a prime.

It is a super-3 number, since 3×121142113221³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121142113201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16187400 + ... + 16194881.

It is an arithmetic number, because the mean of its divisors is an integer number (10686153060).

Almost surely, 2^121142113221 is an apocalyptic number.

It is an amenable number.

121142113221 is a deficient number, since it is larger than the sum of its proper divisors (49836335739).

121142113221 is a wasteful number, since it uses less digits than its factorization.

121142113221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32382356.

The product of its digits is 192, while the sum is 21.

Adding to 121142113221 its reverse (122311241121), we get a palindrome (243453354342).

The spelling of 121142113221 in words is "one hundred twenty-one billion, one hundred forty-two million, one hundred thirteen thousand, two hundred twenty-one".